I currently have a vamo v3 with a kanger protank. After watching a lot of youtube videos about the protank, i've decided to replace the stock wick and coil and rebuild one myself. After rebuilding one (it read 2.6 omhs and vaped wonderfully) and using it for about a week, I decided to change out the wick. Once I took out the wick I saw that the coil seems to be rusting up. I wonder if anyone else's coil turned up like this. Is it rust from the coil or something else, and would it do any harm if I accidentally kept vaping. I have a picture attached for you guys to check it out.