I have a 2ml aspire bdc with a bvc coil. On an eGo-C twist variable voltage battery, I have tried 1.8 and 2.2 coils, and no matter what I seem to blow through a coil a tank, that's about a could every 2 days, I prime them, keep it all clean, and I still just can't seem to keep them from burning up. The only sign I have that they've burned up is the leaking, obviously I don't want to fry my battery so, does anyone have any suggestions? Reason s I might be going through them so quickly? A better coil/tank combo? I like my battery and will not be easily swayed into buying a new one. Thanks in advance