Ok, I have always wanted a quad since the day they came out, but I could never afford one until recently. I finally found a very nice one and arranged to pick it up the Monday after thanksgiving. I was like a kid on Christmas morning for a few days, and then disaster struck. I spent the better part of my Christmas break trying to figure out why my 300ex (that I only got ride a total of 5 hours) wouldn't start. The last day that I got to ride it, I was putting it in reverse to back it into the storage building and the engine died. No unusual sound. It just went dead. I only got it to start up once after that. I took the tank off and cleaned it out. I also cleaned up the petcock and got a new fuel line for it and then I put everything back on it. It was no use. I killed the battery trying to get it started. It had started to leak oil before all of this but I kept a check out it and it never let it get below safe operating range. A closer inspection of the top end revealed that the head and the valve cover had been put back in at some point using only rtv silicone. Not a gasket in sight. I should have caught that before I bought it, but it wasn't leaking and it would have never crossed my mind that someone would attempt that. I'm not a mechanic by any stretch of the imagination, so I decided to take it to a guy that my brother in law recommended. I talked to him last night and he said that he pulled the spark plug and that it had oil on it. Then he checked the compression and it's got 50-60 psi. He didn't take anything off or check anything else because he says the engine is blown. He said I'd be looking at around $800 for parts, and that I might be better off to buy a used engine. So here is where the dumb questions begin. Would a bad seal on the head gasket not cause a low compression reading? There are 330 top end kits on Amazon and eBay ranging in price from $80 to $160. Would that get me going again or is it likely that it damaged something other than the piston and or rings and cylinder? Would it even make since to spend $800 on a 2003 quad? I know the last question is subjective but I've already got a pretty good chunk of change in something that I only got five rides out of. I've wanted a quad since I was a kid, but I can't afford to keep throwing money at it I made the first payment on it yesterday morning and got the news that the engine was fried about 3 hours later. I'm sure you can understand how disgusted and frustrated that I am right now. Thanks guys...