What did your rebuilder do with his parts inventory when he retired? If he's still on the green side of the grass, you could probably purchase a lifetime supply of brushes, bearings, bushings and other small parts from him if he had any left over when he closed the business.
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!