Glenn, I almost hate to go into this but... They probably don't consider that servicing/repairing a hub. When I look at mine (which doesn't have any script) I can't think of a practical way to remove the pitting on it. The pitting on mine is minor but it certainly won't buff out. On the other hand if it were in a wheel one probably would not see it.
Paul Patzkowsky Longmont, Colorado just cut 12" diameter tree down with a handsaw (Polish chainsaw to you novice woodworkers)