i know, jetting sucks donkey dick, i worked all summer getting that stock carb right, and now went 34mm, and it was givin me fits, i already talked to the yamaha mechanic at ebensburgh yamaha, he assembled my motor with my parts for $110, and he said for me to wait till it warms up and he'll jet it for me, so that told me he knows what he's talkin 'bout, knowing that temp affects it, prolly what i'm gonna do, no matter the cost, better than frying my new port job