Ok, I received my James Dean kit yesterday (thanks for the fast shipping). I got the kit installed today and did a few test rides. What I was running: Originally I had 160MJ ~ 48PJ ~ 70PAJ ~ 2-turns on Zip Ty fuel screw ~ Stock needle in 4 position from top. My air box is heavily modified w/left side cover opening. I have the GYT-R insert with tubes removed so it's just about a straight shot. Throttle stop has been short to YZ specs, 800 altitude. My bike was really very close to dialed in with just a couple of issues. 1) The bike would bog and most likely die if the throttle was snap full on while sitting at idle, but while riding it was not a big problem but it seemed to me that the bike may have been a little rich on the low end. 2) The bike seemed a little lean on the top end sounding like the engine had reached the rev limiter. The front end would easily rise up in 2nd and 3rd when I jumped on the throttle. The JD kit setting I am experimenting with: 170MJ ~ 45PJ ~ 70PAJ ~ 1 3/4-turns on Zip Ty fuel screw ~ JD (blue) needle in 4 position from top. The bike started and idled fine. I am sputtering on the low end mostly 0-1/4 and a little at 1/4-1/2 throttle. My top end is scary great, bike no longer seems like it's lean or hitting the rev limiter. The bike still has a small hesitation while sitting at dead idle, but it no longer dies when the throttle is snapped full on. I can no longer pull the front end up as before so I need a little fine tuning. I am wondering if I need to try a different needle position or go back to the 48PJ for starters. I would recommend the kit to anyone who's considering. I believe with a little fine tuning the kit will have everything you need no matter what altitude you ride.