I rebuilt a wick/coil for my Killer a couple days ago. It was my first silica &/or NR wire build & it came out at 1.5 Ohms & vapes great. Now, after going thru a few tanks of 50/50 juice it's reading 2.3. Can any of you killer experts give me an idea what might be happening here? It's still vaping great...is it getting gunked up maybe? I dry burned it w/no effect BTW. - LOST