i am attending some track days this year and occasionally ( say 1 out of every 8 laps ) when I hit the backstretch and let er rip, the bike wont rev beyond 7000 rpm`s. by the next corner she is all normal again and rippin. it has never happened more than 1 time per session, but happens every session. not on the same lap either, it always varies. what da hell is this??? coil? carb?me? is there a rev limiter on these bikes? ???