I picked up a DP-60L about 5 months ago. Works perfect and everything on it is in great shape, given its age, but there is some "shading" (I hesitate to call it staining) on the tonearm tube, the headshell, and the metal ring around the platter, just the metal parts. It's nothing horrible but I'd like to try to clean it up a bit.
Maybe it's from cigarette smoke? What can I clean this with? Thanks in advance.

