I've searched and searched, and done everything I thought of, but still no luck. Here's what I've done: 1)new OEM cylinder and new 13.5 comp JE piston 2)cleaned jets 3)new timing chain 4)checked valves (twice) I do have one intake valve that is very difficult to get a .038mm feeler in. But if I were to go down a shim, my gap would move to ~.08, so I left it. 5)installed header pipe gasket (not on before but Gray said it should be there) Only bad thing that happened (not sure of any effect) is that I chipped a little bit of the insulation off component of the stator when pulling the flywheel. it did start eventually when I completed the job long enough for me to break it in (and ran great for the most part). I can sometimes get it to start with lots of throttle and kicking the sh*t out of it. When I do hold some throttle on, I often get kick back (normal?). But I still have to hold throttle almost wide open to keep it running. Messed with idle screw to see if that would help, but still can't seem to get it to start smoothly. I know this is a lot, and it's probably something stupid/simple, but I've already missed over a month of riding, please help!! Edited July 6, 2011 by jbodin18 If I could delete this I would. I'm an idiot. Was using wrong valve measurements...gonna try again.