A simple spacer ring, attached to the spindle with red LocTite would solve that problem. Just machine the ring to the same outside diameter as the hub or the bearing, and polish it sufficiently to avoid damaging the seal. Made from the correct meterial, it could even be hardened to a similar Brinnell number as the bearing race, although I doubt that would be necessary.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!