[lincpimp]

Sike had the same issue with his inner bearing on the rear diff of his revo when using the spiral cut gears. I suggested making a spacer that would fit between the 2 bearings, and distibute the load onto both bearings. Basically it would allow you to clamp the bearings between the pinion and the drive cup, and it would be impossible to push the center out of the bearing. Just a thought...