I have some Magnat ( a German brand no longer available in the US) speakers that are nice except that they have cheap binding posts (not gold plated), and they are corroding. I would like to replace them, but it appears Radio Shack doesn’t carry gold posts. Does anyone have suggestions for a good online source for these parts? I’m looking for something I don’t have to solder. Also, what’s a good method for cleaning corrosion? Thanks for any tips.