Go ahead and give it a try, since you aren't looking to add monetary value to the levers, you aren't losing anything of you had it go south. Unless you really bear down on things while sanding, filing and even polishing, you won't mess it up. Start with a very mild polish, make sure it has little or no abrasives in it (the Blue Magic that Lazyass recommended is a good one), and some decent soft, clean cloths. The amount of surface grime that comes off easily will surprise you. I was hesitant about filing and sanding, but with some care it wasn't difficult for me. And, I am as ham-fisted as they come.
Bill
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Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13
Last edited by qcpmsame; 11-10-16 at 06:56 PM.