I'm having a problem with jetting too. I'm running a 4mil serval ported by fast with 22cc domes running race fuel(110) and have 178psi in each cylinder. I have 35mm a/s pwk with 158main and 50pilot. I'm at about 600ft. Haven't had the cover off but believe it was set at +4 timing. Needless to say, I am blowing black ass oil out of everywhere in the exhaust. Any seam hole rivet end cap I mean everywhere. And I'm not taking a little spray, after a couple hours of riding you can actually watch oil drip from the rivets in the silencers. It doesn't run bad, feels like it pulls real good but I had a stock motor with pipes and reeds before this. Oh yeah and I'm running r2 pipes. Do you guys have any idea what it could be?