I picked up an Evod kit and a protank. I like both the Evods and the Protank, everything was working great, but I recently ran in to an issue. The protank seems to not be making contact with the batteries (very little to no vapor when I push the button). At first I was able to tighten or loosen the protank on the battery ever so slightly and it would work fine. When that stopped working I tried to adjust the battery center pin a bit like I've had to do in the past with some of my 808 batteries, but that hasn't made a difference. So now my protank isn't working on either Evod battery but the Evod clearos work fine. Any suggestions??