Booster Dewey as recommended, as far as pot metal, if it's pitted your going to PAY dearly! if it looks "unstable" to the plater, most will refuse to de-cromate it for fear of losing it in solution, never mind re-plating it, best to replace with NOS, or repro pcs if available as pot metal is expensive, if you want nice potmetal work, Advanced plating in Nashville Tenn, Steve and crew do the utmost in quality work and wrecking your wallet at the same time