I am going to weigh in here on Blue Star, speaking as a new owner but with a lot of experience repairing appliances of all sorts. I do not think there is ANY reason to not at least consider Blue Star if you are looking for a high output gas range similar to a commercial model. My reason is that all arguments to the contrary aside, these things are SIMPLE. There is nothing to them. There are no complex displays, timers, esoteric ignitors, or sealed burners. I can have the whole top off my stove and all of the burners pulled out and sitting on the counter in two minutes. I got a good deal on my stove from a dealer in LA who was "moving them out" but might not be what one would call a "white glove" servicer. No big deal. I brought the range the 150 miles back home in the back of my truck and installed it with my contractor who did the kitchen remodel. When I was moving the heavy thing I managed to break one of the ceramic ignitors. When I called the manufacturer to buy a replacement, Matt at Prizer Painter said "We'll just send you one free when send in the warranty paperwork." Now, that does not sound like bad service to me. I am giving them the benefit of the doubt when it comes to service. Now, if I run in to the ignitor/sensor board issue that some of the great pioneers here on Gardenweb have gone through and troubleshot for us I think I will probably give Prizer a shot at fixing it, but if that doesn't pan out I am just going to get the replacement component and put it in myself. No big deal. Now, as far as performance, I didn't get the RNB (the 22Kbtu model with convection). I just got the RCS model with the 18kbtu burner. It's hot enough so that you have to be careful as heck to not burn non-stick cookware. I imagine the 22k btu guy will really smoke you out if you are not watchful. From what I have seen, the 36" RCS is beautiful, VERY SOLID, lights easily, handles lots of different sized cookware easily, and has a delicate enough touch that I am not at all worried about making Hollandaise on it. I am happy about its simplicity and utility and have basically only one concern and that is parts availability. But with Gardenweb here my guess is that if something breaks, someone here will know where to find the parts to fix it.

My Bluster range was just delivered in January 2018 and I too thought I was getting the newest model (RPB304BV2). My serial plate looks suspect at best (the over printing looks counterfeit in my opinion) and reads (RPB304BSS). Internet searches showed the BSS was discontinued in 2011. When I inquired further I was told it must say V2 somewhere in the model #. Please help, I attached a photo of the serial plate, I don't see V2 listed anywhere.

Here is a link to the igniter that I bought for my RNB: https://www.amazon.com/gp/product/B00ECV2HOA Looks as if it isn't the same one that goes into your RCS, though. So, you might have to keep looking. But as far as I can tell, there are only a small handful of common designs; so, it shouldn't be to hard to figure out. Good luck, and hopefully Bluestar can answer your questions about the deformed heat spreader. I am pretty sure it is supposed to be in a V-shape, but I don't think it is supposed to buckle and neither are the rivets supposed to pop. Bluestar would know better whether that's merely a cosmetic issue or whether it is indicative of a real problem. Please keep us posted how things work out.

Around here, plumbers seem to prefer putting the gas line into a recessed box. Or alternatively, if that isn't a good option, then they'll put the gas valve into the floor. That also makes it easier to reach the shut off valve in case of emergencies. Otherwise, I sometimes see a secondary shut off valve in an adjacent cabinet. As others have said, none of these locations guarantee that the gas line fits behind the range. Every range is a little different, and some of the larger ranges do use almost all of the available space in the back. So, it is not unusual that you'd have to move the gas pipe a little bit. A good general contractor plans for that possibility -- after all, you never know if a few years from now, the next home owner doesn't want to switch out the range.