I just went to a store and bought a Nemesis clone, but the inside is kind of dirty or the copper finish is messed up...
http://s10.postimg.org/mor1n35p5/unnamed.jpg
Is this an issue or can I just leave it as it is?
Edit: This is only a small part of it though, there's a few more longer streaks like this.
More than likely residue from when it was machined. Clean it well, will also help w/ the voltage drop.
The mod has remnants of the machining oil on it still from when it was made.











































