I'm trying to keep the stock gearing on the bike. When I turn up the idle to 4g's and try to pop it up to 12 it boogs out like crazy, as if I was in 2nd or 3rd gear. Without the idle up it pops up fine but i'm sill doing 15mhp at 3 1/2 grand. What's wrong!!!!! Is it the butterfly vavle or gearing or what? HELP I can't do any slow **** until I fix it.