Any recommendations on gearing for the TSR 13.5 The 1 2.0 in a B64 wheeler? I'm currently at an 81/24 and it comes off in the 140s at the very hottest spots i can find, most of the motor is 110-130s. I feel like i'm a bit low on gearing, no one i know is that low at our track, but if i go any higher say 78/24 or 78/25, i think i might start getting too hot.