Report as inappropriate

the axle shaft that clears the counter gear in the axle and has the little ridge to hold the bearing seems to be a weak point. the forces are so strong that the shaft is jamming into the bearing which wears away the little ridge. eventually the shaft cannot hold pressure against the diff bevel gears and then the transmission starts slipping. i didn't look into the clearances but a sleeve over the shaft that goes back to the diff bevel gear and fits between the bearing and the bevel gear would support it much better under load and prevent the axle diff from slipping.