New here, Dealing with an all stock 200cc, just got it, not sure if the piston is new, but compression seems high (have no official pressure gauge yet). Kicks back almost every kick but will push start and run so, so at idle and raps out pretty good like a power band on the high end once its warmed up well. (probably needs jets cleaned in carb still). Ok so took kicker all apart, all there, spring is good, gears are good. swapped kicker set up with 2 others, same result. Ohmed the coils as spec in the book. Little out of tolerance but no short or open. read much about "timing may be too far advanced", so I took off the flywheel (which shines like brand new inside and out) and filed the bolt holes in the stock stator plate to retard the coil about 3-5 degrees (as mentioned on another thread here). helped a little, but STILL kicks back 60% of the time and now lacks power terribly. planing on doing a small timing advance once I get the kick back figured out. the guy before me busted a couple right case covers dealing with this, I've nearly bruised my foot. lol. could it be the CDI? is there anything else that I can troubleshoot? any help appreciated.