I NEED HELP!!!!!!!! I have a 2000 kdx 220(pipe,rb carb,240 big bore,boyssen reeds,drilled air box,b7es,running race gas and premium 50/50 at 32:1 with hp2,carb currently 45 pilot,155 main,needle in top position) The problem I have is when I roll the throttle slow it gets close to wide open without missing. If I roll it hard it won't even get close. The further down I move the clip the worse it gets. I have tried 40,42,45 pilot and I have tried 142>155 main. I have fresh gas and the cylinder piston & rings are new. I am not sure which needle I have but it was sent with rb carb.I would like to get to point of doing a plug chop but cant get it to stop misfiring.