How do I properly clean copper? I have a copper Nemesis and I can't figure out how to clean it properly -_- What I did was leave it in hot/boiling water pretty much overnight, but it just made it worse Here are pictures: Here are the outside parts What it looks like on the inside Would just simply using alcohol swabs do the trick? Also, on a slight tangent, how do I remove the extension from the top contact pin thing (first picture, piece all the way to the right)? It's kind of stuck on there, and I can't use 18650 batteries until I figure out how to shorten the mod. Help would be greatly appreciated, thanks!