zbull, I can only give you my experience. I too had excessive yellow flames with LP. Even after adjusting the venturis open all the way there was still some yellow tips, but it didn't seem to affect the cooking any. I had read some posts from one or two others that had a similar problem. They had contacted Virco and received smaller orfices to compensate and it seemed to solve the problem. I am at a higher altitude than many (4500) and I atributed this to the problem. When I received my conversion kit I noticed the size of the orifice was 1.70 mm which, not to be too technical, converts to about 16000 BTU output, not the 20K that the burners are rated at. I actually found this to work rather well for me as I am getting nice blue flames. I had to adjust my venturis all the way closed after installing my conversion kit, because the increased air supply was not allowing the gas to travel all the way to the end of the burner tube where the ignitor was. I only discovered this after lighting the burners by hand and noticing the flames did not go all the way to the end of the tube. Once I closed the venturis, this problem was solved and the burners lit fine again. I could probably increase the size of the orifice to both regain my BTU's and be able to open the venturis a bit, but I am getting plenty of heat. By my estimates with an oven thermometer, I am getting about 600 at the grates! More than enough to sear any cut of anything for me. I don't mean to get too technical, but it is more than just a yes or no answer. The bottom line, I think, is that the orifices they send you are undersized for the BTU's that the grill is rated for, and if you have 7" of gas pressure (same as I did) then you should have similar results. I think I might try and drill the orifices out one size larger, according to the charts, this should increase my BTU's to 18K per burner. Well see though. I hope this has helped to some degree.

I purchased the Costco "Classic" back in the early 2000's - I think it was 2000 to be exact. I am STILL using it in June of 2019 (love to read the "I'm afraid of this new product's longevity / reliability" comments posted in 2002). Went through several grill covers - I leave it out all year long - much too heavy to move around and I am in NJ so we don't use it after November open it in late April/Early May. A good Quality Cover is important to keep water out of the side burner compartment (does not drain at all) and main burners - water is bad. But if I took some photos of this grill you would think it was only a few years old. It is by far the best grill I ever owned - replaced the heavy duty high BTU side burner once because of water damage (found an exact replacement - you need to search for the specific model to buy quality parts - not the imported junk sold on Amazon) and the main burners once in 18 years - one of them needs replacement again - I did find the CORRECT heavy gauge stainless main burners on line at a BBQ parts store. As a comparison (you get what u pay for) the thin gauge stainless burners that u get from Big box or Amazon cost around $20 or less for all 3 burners - the correct heavy gauge SS replacement burners cost over $20 each - if u but the cheap ones they will rot out in a season or maybe two - the heavy gauge replacements will last 5 to 10 years. Other than trying to find a quality cover that will last more than 2 years (I am trying a new "King Kong" brand cover - it's more $$$ than the run of the mill types but fit, feel, vinyl thickness seems to be of a much higher quality - last one was a top of the line Sears brand - got about 4 years out of it before it rotted away. The grills are indestructible as is the frame, cover and other parts that fall apart on other grills in 5 years or less, no rust or corrosion anywhere, easy to clean, BTW - I converted mine from propane to Natural gas after the first 3 or so years once NG was available in my neighborhood, I also converted a 40 year old Propane fireplace to Natural Gas.. You don't need a "special kit" from the manufacturer - all that is needed is either replacing the venturi valve orifices on each of the burner controls including the 3 main burners, the rotisserie burner and the side burner, or you can carefully drill out the old orifice to support NG (Propane is under higher pressure and uses a smaller hole than NG) - I did this on the fireplace - you need a special sized (numbered drill bit) drill bit used by machinists - they use numbered bits as opposed to what most people are familiar with like 1/8" may be a #34 in numbered bits - they can be had just google - I think Harbor Freight may carry them as well since they are used by the automotive repair industry as well. Once you look up the correct size hole for Natural gas in your area (sometimes extreme elevation may require a different size than sea level - easy enough to research) I recommend using a drill press (I have a small one that cost under $100) for a perpendicular hole - but the orifice metal is soft brass - this isn't rocket science. If you want to purchase replacement venturis - especially if your not sure if u may move and convert grill back to propane) they are very inexpensive for the kit, size / threads are pretty much standard - any good Fireplace, Professional Plumbing that deals in gas appliances, or BBQ grill stores (on line or retail stores) can provide you will the venturis u need based on the model grill - or worst case - u may have to remove an old venturi and take it to the store or measure it using a caliper or precision ruler & a photo to send to on-line store. There are only a few different sizes & most BBQ grills are one size. The post that said " I heard you need to change burners if u convert from propane to N.G. or u get a yellow flame" is total nonsense - if they were told that by a salesman - they were being ripped off. The burner doesn't care if the fuel is propane or NG - that is ridiculous when u consider how many other gas appliance can run on either fuel and imagine having to change the burners in a 600,000 BTU Pool heater because you changed from propane to NG or visa versa - that would cost about $500... I converted both my fireplace & grill to NG and did not change either devices burners - the FP I drilled out the venturi and the grill my local FP store/repair shop (been there for 40 years - an old timey type shop) had the 5 venturis needed for the grill - again not special for my grill - same size as Weber and other big USA name brands (Ducane, Viking etc...). I think they were something like $2 to 3 dollars each. Taking apart the gas control valve is easy once you get it out of the grill - a bit difficult cause you have to lay on your back to access the valves. REMEMBER you also need to remove the old Propane feed hose assembly from the main valve assembly that has the gas input male flare fitting (should be 3/8" male flare - if you measure the outside diameter of fitting it will measure 1/2" !! that is 3/8", a true 1/2" fitting would measure 3/4" outside diameter - I don't know why gas fittings are listed by INSIDE DIAMETER when all other plumbing is measured by outside diameter - anyway - if it measures 1/2" then it is 3/8" that you would need to order/buy - this can be purchased on Amazon - the hose comes in 6', 12', 25' & 36' either 3/8" or 1/2" fitting - one end - the female 3/8" flare - screws onto grill 3/8" male flare - the other end is a two piece quick connect safety push & click connector - u need to have an outside male NPT (pipe thread) connection from you on/off ball valve - I believe it is 3/8" also (not flare - NPT) - the hose comes with the quick connect adapter that screws onto the 3/8" male NPT - the other end is the "quick connect" female - the hose has the male push on quick connect. The rubber hose is actually 1/2" even though they list this as a 3/8" (I accidently ordered the 1/2" hose & Fitting - 2x as expensive - longest = 24', and huge in comparison to what I needed - as I said before the 1/2" is much less common - harder to find and measures 3/4" fittings, hose etc... - had to send it back to amazon and replace with a 36' x 3/8" worked perfectly & extra length was needed. Having an outside ball valve allows me to shut system off when not in use - in case a critter chews thru my hose - but if you disconnect the quick connect fitting it has an automatic shutoff at the fitting - good if someone pulls off hose at house but doesn't help if vinyl hose is cut or eaten. The hose I have is 15 years old - no leaks. o conversion is relatively simple 2 step process - replace the 5 venturis or remove and drill with correct numbered drill bit sized for NG & replace propane high pressure hose with low pressure 3/8" x length needed - 3/8" flare on grill end & quick connect on hose end - recommend installing outside ball valve to shut of gas when not in use.

I agree with GrillMeister. I bought my first Genesis 3000 when Weber first started making them in the 80s. I had a traditional Charbroil, and the aluminum castings corroded to where the whole thing turned white. Also, the "H" shaped pressed-steel burner corroded to where I had very little heat control. And the chrome wire grills lasted maybe a year. The engineer in me really liked the Genesis design with the pipes for burners, the flavorizer bars and the porcelain coated parts. I did the math, and if the Genesis only lasted up to its warranty, it was cheaper to own the Genesis than to buy Charbroils like the one I had. That Genesis lasted over 10 years. I'm now on my second Genesis; a 1000, which is about 8 years old or so. (I found I didn't use the external burner) I've replaced the bars and grates with stainless parts. And this past weekend, I replaced the rails that the bottom tray slides on. Weber sent those to me at no charge. If I were buying a new grill now, it would be a Silver C. I wouldn't spring for the Gold, cause the SS lid is not that big of a deal to me. I can replace the bars and grates in stainless if I need to down the line. I wouldn't spring for the Summit series, 'cause it's a lot more money for something that is not much more functional. It does look cool, though... The Silver Weber is a great cooking machine.

Well, I bought this model from Costco in 2003. Every four years, or so, I call Charbroil, give them the model #, serial # and date of purchase. They then send me new burners, carrier tubes and grills for about $10.00 shipping and handling. A 99 year warranty is the greatest thing since sliced bread! I quit asking for electronic lighters because they grease up, burn off and generally don't work. No big deal to poke a lighter into the grill, fire it up and go. I love this cheap, old grill. I have one in Arizona that costs four times and doesn't perform any better!