Don't worry about them. It's called "character" and shows you use the thing.
OK, joking aside - no, no real idea. Yet. Mine has a few little nicks and scratches, seems all the talk about the black chrome not being as robust is probably quite right.
The finish looks the same shade/brightness as the semi-gloss acrylic paint that Humbrol make for modelling. I have some of that somewhere around, maybe a dab of that would cover up some of the worst transgressions. I'm actually thinking of trying that on my Red dot and the white writing - at the moment they're covered by leco tape but with handling the tape slides around a bit and leaves a sticky residue, so I may just paint them out.....