Need more time to update this thread, but Steve I decided to figure a way to seal that leak and it turns out that 2 part epoxy worked very well. Now I have a small leak on the center of one of the binding posts, but it's minor. Didn't get them to paint as I want to obsess over them for the next couple weeks until we leave for Russia.
The subs do hit 20 Hz. I pushed them even harder. But, I'm running into the thermal limit and power rating of the drivers earlier than I would like. They do sound very sweet. I did some measuring at can cross them over at 80 Hz -6dB with a 24dB/octave slope at the highest, which is impressive.