Every 510 cartomizer I put on my 5V GLV-2 using two Ultrafire CR123 3.6V batts ends up burning everything inside (the filler/eliquid) making it horribly harsh so bad that I can't even inhale it. It doesn't matter how full the carto is. It happens to every single one I use and I make sure they're completely full with e liquid. I have bought non rechargeable 3.0V CR123 batteries and I do not have this problem with those but when I use the batteries the GLV-2 is designed to use (CR123 3.6V) I have these problems. I have thought about getting some rechargeable 3.0V CR123's to hopefully fix this but I'm not sure exactly which ones I'd need for the GLV-2. Can someone tell me why this is happening and what I can do to fix this?