yea, if u look carefully at how the brake disc moves on the shaft, u will see it gets canted over one way or the other, depending which way u put it on iirc. its down to the tabs... either cut them off halfway, as ive done to mine and its fine now, or try cutting them off completely if half doesnt do it for u.

adding an uprated servo to run throttle and brakes, with a metal brake disc gives u much more stopping power than u will ever need, even with tmaxx wheels n tyres on there.

good luck