Hi, I want to get rid of this "thing" my dig.piano got over the surface of its metal case.
I believe its some kind of moisture, though it has some kind of worm-like shape (like some kind of tiny roots).
Anyway heres a few pics:

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Im guessing I should somewhat clean the factory paint from the surface and paint it over (but dont know exactly how) (or maybe just paint over?)

Ok guys what should I do?? Thanks in advance!!