Hey my bike is recently rebuilt and runs so great throughout most of the powerband, has 4rs on it, airscrew is 1.7 turns out, always starts up and runs perfect! exept... Going from no throttle at all to Whacking it wide open it has almost like a cutout point, is this too rich or lean or something? Or is it just revved out? I feel like sometimes it has more revs to go, i run it way up in the revs so any info on this would be good, i race sunday and i cant figure out what this is, everything is fresh, (plug filter,gas,clean carb) I would appriciate any help, thanks!