Rode a 98 YZ 400 the other day and fell in love with it, only fault is the starting process. A local Yamaha shop has it on the used section and even they had a rough time starting it. Only one guy there could start it. I tried and tried, but to no avail, she just wouldn't cooperate with me. I have ridden two strokes my whole life with an occasional XR200 or 250 here or there. I will probably go next week to trade. But first let me ask you guys this about my 125. I traded my KX250 to the bike while it was blown up, needed rebuilt. I sleeved it and put a Wiseco piston in it and rode it about four hours. I was racing it one day and it just quit, lost its compression and wouldn't start back. I disassembled it and the front section of the piston was worn to the exact pattern of the section between the exhaust ports. The bore on the cylinder looked great, what could be the problem. A friend said the section between the ports should have been 'bowled' out to give the rings some expansion room once the motor got hot. Any help is appreciated. ------------------ Currently a 1997 YZ125, Pro Circuit factory sound silencer, FMF fatty pipe, carbon fiber reeds, oversized tank, Wiseco piston WANT A YZ 400!!!!