Thanks so much for the reply. I noticed the last time I went out to mess with it that there is a spring in the front which is not disconnected, but is stretched beyond what it seems like it should be. It seems that it is too loose. Now I just have to figure out if I can find a suitable replacement or if I have to take it to the shop for this. Thinking back I have noticed sometimes that when I was mowing under the pine tree branches that it would sound like it was going to cut out for a second but I thought I possibly blocked something with the branches. Now I know what that was. Thanks again.

To calculate mower blade tip speed: tip speed[ft/min] = Blade Length[in] x pi x rpm x 1/12[ft/in] ~ or ~ tip speed[fpm] = blade length(in) * 0.2618 * rpm rpm = fpm/(blade length[in] * 0.2618) To achieve a tip speed of 19000 fpm for a 21" blade: 19000/21 * 0.2618 = 3455.93 rpm A 21" blade at an rpm of 3100 gives you a tip speed of 17043.18 fpm To calculate the engine speed needed to achieve a certain blade speed, it is necessary calculate the pulley ratios between the engine drive pulley and the blade driven pulley. Size of Driven or Driving Pulley = Diameter of pulley multiplied by its RPM divided by RPM required single belt system: The ratio equals driving pulley speed/driven pulley speed = driving pulley size/driven pulley size If the engine speed is 3100 rpm and you need to achieve 3455 rpm for a 21" blade, the ratio is 0.897. This means if your engine pulley is 4 inches, the blade pulley needs to be 4.45 inches. To find the ratio for decks with multiple drive belts: Divide product of driving pulley diameters by product of driven pulley diameters and multiply quotient by RPM of first driving pulley, this equals speed of last driven pulley. speed of blade pulley = (engine drive pulley * deck drive pulley/deck driven pulley * blade pulley) * engine rpm Keep in mind that measuring the pulley diameter is only an approximation. What really needs to be measured is the "pitch diameter" which is where the outer edge of the belt rides in the pulley.

A little excerpt from an article about AC sealers. Sadly what makes them work is what makes them a problem. "QUOTE" ------------------------------------------------------- Uh oh, what about violating the warranties? Understandably, none of the major manufacturers of original equipment parts or A/C equipment wants you to use any of these products. Finding sealant in a failed part can nullify the warranty. Heres what some of them say about A/C sealants. GM Bulletin No.: 03-01-38-001: March, 2003. "GM Service Operations DOES NOT endorse or approve the use of any aftermarket A/C system sealer, A/C stop-leak product or A/C seal conditioning product in any GM vehicle. The use of these aftermarket products may cause damage to A/C systems and to A/C service equipment. A/C system found to be contaminated with A/C system sealers, A/C stop-leak products, or seal conditioners are not covered by GM New Vehicle Warranty or the GM Replacement part Warranty." NAPA Temp: "NAPA TempÂs policy regarding the use of these products (A/C System Sealers) is that we DO NOT endorse its use and will deny all claims made against defective products returned for credit that are found to have been exposed to or suspected of containing said sealers." Delphi Product & Service Solutions: "Although pure leak detection dyes are permissible, Delphi does not approve the use of any type of air conditioning system sealants. The use of any sealant immediately voids all warranties of compressors. If it is determined that the compressor has failed due to the presence or evidence of any sealant, appropriate account adjustments will be made. Only Delphi compressors with an orange aftermarket label will be eligible for warranty." Visteon: "Visteon Automotive does not endorse or approve the use of any aftermarket A/C refrigerant system sealer. The use of such aftermarket refrigerant sealers show evidence of damaging A/C refrigerant recovery/evacuation/recharging equipment, as well as possible damage to A/C refrigerant system components. Vehicles found or suspected of having an A/C refrigerant sealer in the system should be serviced as a refrigerant system containing a contaminate. Visteon approved refrigerant system flushing equipment/agents may not remove the refrigerant system sealer from a contaminated system, and replacement of the entire A/C refrigerant system is recommended. Vehicle A/C refrigerant systems determined to be contaminated with an aftermarket refrigerant sealer may affect A/C refrigerant system components warranty." RTI Technologies: "RTI recovery/recycling machines are not designed to recover and recycle refrigerant system sealers. The RTI Technologies Warranty may be considered void if evidence of any refrigerant system sealer is found in any of the internal components of an RTI recovery/recycling machine. The owner of a contaminated machine may be advised the warranty is void and all charges for repair will be his responsibility." Mazda: "Do not use any aftermarket A/C refrigerant system sealer in the repair of Mazda vehicles. The use of such aftermarket refrigerant sealers may result in damage to A/C refrigerant recovery/evacuation/recharging equipment and/or A/C system components. A system found with or suspected of having an A/C refrigerant sealer in the system should be serviced as a refrigerant system containing a contaminant. Refrigerant system flushing equipment and agents may not remove the refrigerant system sealer from a contaminated system, and replacement of the entire A/C refrigerant system is recommended. These repairs will not be covered under the manufacturer's basic warranty." "Quote ---------------------------------------------------------

For $350 it is not a bad computer, especially when you consider the 'free' upgrade to Windows 7. The cheapest price for Win7 upgrade seems to be $119 or one third of the price of your computer. The advertising seems pretty pathetic. It refers to * External Ports : 9 - USB 2.0 Ports (5 Front, 4 Rear), 1 - HDMIÂ Port, So where are the LAN port, DVI and/or VGA and speaker connections? I have always understood Fry's to have a good reputation but click the link for warranty info and you get a snail mail address to write to for details. Seems very progressive in this electronic age.