I was hoping that someone might be able to help me get my '02 WR426F running right. I am running a White Bros E Series w/ quiet core 2 & 12 discs, removed the airbox lid, cut gray wire, yz throttle stop. The carb: stock needle position, 170 main, 2 turns out on screw. My bike starts & idles perfect! My problem is at 3/4+ throttle when it starts to pop. I assume that I need a larger main, but how much larger? (My home in SoCal is @ approx 1000 feet) Any suggestions would be great! Thanks.