New dct has issues...lol! The bottom cap o ring will not let go of the cartomizer AND the bottom outer o ring allows the tank to slide up when I try to pull the carto. So...I filled the tank by taking the top cap off....and the pressure of replacing the cap caused a flood....sigh. I have several very small thumb screws and was thinking of adding a side fill port. Do I need a gasket of sorts to hold the juice in...or will the thumb screw sufice?