I started using Vision cartomizers instead of standard ego-c type A tanks. The draw was good a couple of weeks, but now after a few puffs, liquid starts to get into the battery connection and I get no vapour, strange taste and have to wipe it once every couple of puffs. The ego-c tank works fine by the way. Maybe i screwed them to tight, or overfilled the liqiud? Now if I fill it to the maximum, 1.8ml, i get the same thing. Only when the liquid level drops to around 0.8, i can get a decent vapour, however I have to refill it much more often. Any help would be appreciated.