I've got an 02, all stock with an 03 motor (motor was supposedly rebuilt, but I don't know what was done to it) except for white bros. e series slip-on, which I added. It starts and idles smooth. but on accel., it feels like a 2 cyl. missing on one cyl. I used to have an 01 that did this occasionally, I'd just screw in a new plug, and it ran fine again. I've tried a couple different heat range plugs, and it doesn't seem to help. I just bought this thing and recently got it running (basket case that came in boxes), so I have no idea how its jetted (plugs seem a bit on the dark side). I've got an extra cdi I was thinking about throwing on. Any ideas would be greatly appreciated. Also, what were the stock h.p. numbers on these?