Have you had the motor timing adjusted, or have you had the motor bearings replaced with ceramic bearings? Without knowing the rules for the class your running, its kinda hard to say alot of speed tricks. Can you run ceramic bearings in hubs? Have you asked any of the fast guys at the track for some tips? Those are all questions I would ask and approach. Ceramics for onraod seems to be a big key around my area. But some classes don't allow them.