So I’m rehabbing my SP-15 currently. The rollers melted a long time ago, and the printer has been sitting in a garage for 20 years. There was some light rust and goop on most surfaces that I was able to remove. I followed the advice here and removed a lot of the rust with WD-40 and scotch-brite pads. Now that that’s done I feel like there are some scratches on the drums, and they seem pretty dull. Is this OK or are there any ways I can get a higher polish on everything?