man i need to to something with mine then cause i have 38 mm carbs, v force reeds, cool head 18cc domes, trued and welded hot rod crank , grr pro port, lightend flywheel, +7 timing, i was runnning shearer drag pipes but now have power pros, bored 20 over with wiseco prolights and 17/39 sprokets and my fastest mph through the 1/4 was only 96.