?
Ok I received the parts and I built the car from scratch using the new bearings. I realised that the Rear bevel gear shaft is moving up and down when the gear box is removed from the car (but still sealed with the bevel gear and diff inside)
I looked closer to discover that the bearing housings in the gear caseare slightly too big for the bearing, causing the bearing to wobble with the shaft in it. Can this explain the stripping of the rear diff and the spur? I am using the carbon reinforced gear cases btw. Is this kind of wobbling normal, it happens to the front too but the front doesn't strip as easily as all the weight goes to the rear under acceleration.
If this gear case is the problem, what do you think I should do so the bearing is held tighter by the bearing housings?