ok been working on shee for awhile previous owner did not maintain at all and i got it for free so cant complain right? well since then i have rebuilt topend .20 over wiseco pro lites replaced all seals and bearings ,dual stage boyesen reeds fmf fatty pipes now its real cold blooded needs to warms for about five minutes before it will perform and when i get almost wide open i get a couple back fires , i also just eliminated the tors set up and am having some difficulty adjusting carbs . i can sync carbs up pretty good and slides match up with windows but in doing that it wont idle any insite will help . air screws are 1 1/2 turns out k&n 2 in1 air filter setup