Legend--polishing axle/bushings/kingpins?
#2
You can use Brasso, toothpaste, etc; but be certain you clean it off completely after polishing. There was a product called bushing buster, but don't know it it still is around. You can also chuck the pinion end of the motor shaft in a dremel or drill and spin it to polish motor bushings. Make certain you are turning it the correct direction.