Measured both axles flange to retainer, drivestud distance, checked for differences in wheel cylinders, mounting studs for retainer, backing plate depth. Checked axle bearing registers, heights, etc. The only thing I see is that there is a grease line around the seal on the right bearing where it oozed out a little. The left bearing is sparkling clean. Could the rollers in the bearing be worn? It had to move over .100". I didn't notice any motion when I tore it down. Going to call Moser during the week to see if they could shed some light.