Been fighting this bike all year. New top end, new reeds, all seals were replaced at the beginning of the year. New 34 mm round slide Mikiuni. The problem is, after the engine gets hot (normal race temps) it will seem to lose power thru the mid. Does good off the bottom and on top end, but struggles and misses thru mid. Ive changed needle jets Q-O, P-8, P-4, O-8. Changed needle clip up and down every time I rode, trying to nail it down. Changed main jets, every step from 390 to 330. Needle is 6F15, about the only thing I havent changed. Could the problem be in the coil/electrical system? Thanks for any help