update, leak down test was helpful there were 2 leaks at the cylinder base, got a new gasket and no more leaks. bike still runs bad. noticed that the exhaust was leaking quite a bit at the cylinder, got new o rings and didn't make a difference the cylinder was actually warn out where the pipe seals and i couldn't get any o-ring to seal right. used a roll of teflon tape on top of the o-rings and no more leaks. i was hoping that that would solve the poor running issues and bad vibration. no such luck. runs well at low rpms very responsive to throttle. once you try to get on it fells very dogish and rough. did a spark check seemed weak but made a 1/4" gap and it still sparked so no weak spark. hopefully its just down to jetting now. looked up a jetting chart and it calls for a 175 main at my elevation of 800 and average air temp 50f the bike has 62 idle 175 main already. any recommendation for jets. engine work is as follows, wiseco .5mm over piston, sleeved cylinder, full port and polish, v-force 2 reeds, fmf fatty, dg muffler, thin head gasket.