Yay! Maybe it was seated wrong. My first Pure tank was wrenched down super tight but the black one was perfect. I hate it when they machine them down like that. I am, however, super glad they include an extra glass. I am already down 1, lol!The cap covering the fill port wasn't tight. It was the top hardware and the bottom hardware (to remove the glass). That was super tight and I used vise grips on top and bottom and slowly put pressure and it started to turn without cracking the glass.
The coil was a brand new coil and when I took it apart, I gave the coil a quick rinse under the sink, and now it isn't leaking.