Originally Posted by
TamiyaW1688
I just balance out not too much up/down and let the bearing press little. The gear will be gone fast if too much up/down.
Right, that's why I'm running 0.1mm shims on only two of the 6 holes, one the side opposite the input shaft. That lifts the case just a bit and levels it out where it's warped. Still, my totally assembled driveline only free spins for about 6 seconds.
I do wonder if the metal miter gears and/or the metal gears in my diffs add to that problem. More friction between the miter gears, more rotational weight with the heavier diffs.