If the rings are wearing unevenly, that suggests that something is not running true in the diff. Are you saying it is happening in all of your diffs? If so I wonder whether something about your tools or technique for sanding the rings is making them come out wrong.
Personally I have never sanded a diff ring in my life - even some of the superficially ropy ones - and I have always had long-lasting, satisfactorily smooth diffs. Whatever surface prep you do to the diff plate is worn away once the diff beds in after those first couple of runs.
|