Can't help with the pv, but that is one tough looking piece of equipment. What the french toast is the double head thing for though???
As for the tanks, try posting in this thread:
http://www.e-cigarette-forum.com/fo...forum/178535-jonboyusmcs-lava-tanks-6049.html or PM jonboy. He posted just yesterday about making new tanks, so I'm sure he can help you out!
ETA: I see you just hit 5 posts, so it may be an hour or so before you can post in that thread. I'm not sure if PM is available or if it requires more posts still.