My '83 Python has a stain (or worn/thin spot?) on the cylinder's finish. It might be from some gun cleaning solvent that wasn't completely removed after cleaning and it etched the plating. I have some 38-1200 polishing compound and thought I would see if I could really screw it up. I figure if I do hose it up I can return it to Colt for a tune-up and a replating job. Any one try this? Nev-R-Dull didn't work. I can't stand the stain and I'm not trying to save the gun as a collectible. It's a shooter but I like my guns looking like new. (I know..it's an anal thing.) Any suggestion would be appreciated.