I currently have a fresh top end that im going to break in tomorrow and right now i am running 320 mains, 27.5 pilots, the air screw 2 turns out and the needle on the 4th clip from the top. I want to make sure im rich enough while breaking in the top end so that once ive ran through an entire tank of gas for the break in procedure that jeff from FAST has instructed me to do i can do a plug chop to get it just right, again i just want to be on the safe side for the break in. My mods include .030 over with wisecos, fmf fattys with turbinecore silencers, boyesen power reeds, and k&n pods.