Originally Posted by
StickyFingaz
FYI, I broke two sets of the Spec-R gear diffs on the first and second battery pack with my 4.5 motor. Sanded the back of the spider gears and everything... Needless to say I can't wait for the AE units to start shipping.
Mess with the internal shimming man. I've ran a gear diff in the back of my tc6 since day one with 4.5 and 3.5, through the rroc, and still am running with the original set of gears.