when i bought the bike it was winter , there were no test done at that time in any magazines. my question is , what would be ball park jetting on this bike. 1000 ft above sea level,right now the temperature is between 5 celsius to 17 when we ride. canada eh.needle is in the center position. pilot is a 52. i installed an fmf sst, jetted it down to a 158 for sumer, came originally with a 168!!!. compared to my buddies yz , my bike feels totally less responsive. it doesnt feel like it will rev out on any track , however i can still pull holeshots with it. any thing else other than porting to make improvement for this model? even with its short comings the bike isnt all that bad.