I just purchased this product recently, and sealed it with the recommended 1 drop of e liquid. I've looked on several forums on different strategies to open it:
1) Run through hot water for 30 seconds
2) Using pliers (unable to grip)
3) Screwing the top hardware tighter, so that the bottom hardware is looser
None of these worked. I'm still in despair that I cannot open it, please help as the unit is now useless if I cannot refill it.