The upper ring on my pro tank one came loose and theres no way to put it back so I went and got the pro tank two and since I got it iv had nothing but issues. The draw is obscenely tight and gurgly. When I take a drag the juice pops and I get juice in my mouth. I thought mayb the coil I had was the issue so i swapped it out and the issues continued. Someone told me to blow out the tank so I did. It did help one issues, the flooding and gurgling stopped but the draw is still to tight and im still getting then popping (not as frequent but once in a while). Dont worry your not the only kne having issues with the pro tank 2