Just installed the kit this weekend. Alt 5,000ft, 90 deg., 03 WR450, GYTR muffler insert, opened up the airbox, grey wire cut, YZ throttle stop. Previous problems: - kick started ok, would not elec start for beans - lots of popping on decel - stall off idle in neutral (not a big deal, just not right) Installed the blue #3 and 168 main. all other setting stock. Took it for a short ride, runs hard, all problems disappeared. starts nicely with electric start.