So he replaced the carrier bearing...did he replace the pinion bearing or even recommend it? Did he replace the axle bearings or even recommend them? Am I missing something in the explanation. By the way, I know the axle is the inner bearing but if he said there was wear on the axle bearings and did not recommend them at the same time as the carrier, well, an expert, IMO, he is not. He may be real good at what he does but if he recommended those axle and pinion bearings and you did not do them, that is on you but if he did not even recommend those bearings, then, IMO, it is on him. Or I am just confused. With all those bearings working together and working with those tolerances, The carrier and pinion bearings should have been done at the same time, even if the axle bearings were not but if axle bearings are showing a concerned wear pattern, then that effects the axles.