I'm having problems with 2 of my VK batteries, the same issue plagues both. Both are clean as a whistle, I've scraped them out with a thumbtack and even applied some rubbing alcohol on a q-tip to clean the threads and the inside of the battery. The problem is they don't seem to be making contact with either my chargers or my cartomizers. If I pull on just the batteries, they light up just fine, but as I said I get no vapor out of them, and I can't seem to charge them any further. Anyone have a possible solution or am I just SOL?