ok here it goes i pulled the motor apart and checked the transmission so i split the cases and now that it is back together it wont pull right. it seems to start well and idle fine .... even rev perfectly with no load on the motor. when i take it for a ride it will take off fine but falls on its face and pops and sputters from 1/4 throttle untill allmost wide open where it starts to pull again but still pops and sputters a bit. what i cant understand is that it works not bad in first but each gear gets worse. I checked compression its 148 and 145 psi with 20cc domes at 1250ft, the timing is at +5, carbon tech reeds, tors eliminator kit, with 27.5 pilot toomey needles on 4th clip from the top and 290 mains. pipes are shearer inframes and the bike smokes more out of the left side pipe.
Is this problem an air leak some where? it sounds like its missing really bad allmost electrical or timing maybe? When i checked the plugs today they looked perfect
any help would be great. thanks