I have been talking with Mr. Dean and he has given me a few suggestions, but my bike keeps rejecting them. My current conditions are a 2006 RMZ 450, Full Yoshi RS-2 Stainless exhaust, twin air filter, Power Now Valve, Boyeson Quickshot, I did have an I-CAT but when I put my bike on the dyno it was showing that the I-CAT was creating too much spark and make the tach go crazy, so I moved it for the time being. I am at Elevation 1500 ft, 35 Pilot, JD Blue dot needle on 3rd postion from top, fuel screw out 1.5 turns, and a 185 main. The bike has instant throttle response and pulls hard all the way through. I did a plug chop test and it is tan low on the ceramic. My question though, does this sound like too lean of a set up? James wanted me to put a 40 or 42 pilot back in and run the red top needle on the 5th position down from top. I tried this and cranking on it right off of throttle created a bwaaah then it would take off. Right now it's instant. I am very pleased with the way it is running, but I dont want to burn this thing up if I am too lean. I have tried everything from a 35 - 45 pilot, both red and blue needles with mulitiple clip placement and 175-185 main jets. Any suggestions?