I have a sick WR450 03, YZ cams, M4 exhaust, ZipTy fuel air screw, The bike was running perfect at the race a couple of weeks ago, washed it and put it up. Got it out yesterday to ride and it is cutting out as I roll on the throttle and try to hold a steady speed, kinda like when the pilot is stopped up but worse! I took the carb off and cleaned it. It didn't help so I switch it with another from a bike that is running perfect. It did NOT help!!! I switched the coil and it helped a small bit, I can get it wide open now and it will clean up. I switched the cdi and it didn't help!! Help!