Yeah, I've upped them 1 & 2 sizes...no dice. It's always ran tip-top,...was like someone flipped a switch & shee went to hell--but only at WOT. Reeds are good, compression is fine, coil's good, cdi I imagine is just fine, only thing I haven't changed out is the stator--which probably only has about 30hrs on it(replaced with OEM stator a while back). I'm going to get a stock stator as soon as I get some money, probably the beginning of Feb. & try it, sure hope to hell it fixes it because I'm ready to f*ck'n ride....I don't mind the EX, but want a thrill.