From page one I had the same problems leaking then tried the second coil it came with worked till I tried to refill . Then it leaked again . I popped the pack of 5 atomizers and then again all was well till i had to refill the tank . Works great when it works awesome vape too bad it cost me 4 coils..before it worked correctly. I also came across a Pro tank 3 that had a bad base and could not stop leaking...hope they get this figured out.