double set

Hello all I've searched a lot and can't seem to piece together info on what I'll need to double the LP72's I listed for sale a while back (and still have listed). First, WHY?: Aside from them not selling, I need/want added gas. I have a couple recently acquired HP130's from folks on Scuba...

Catalina* neutrally-buoyant AL80 tanks, left- and right-handed valves, and modular so that you can change them from yoke to DIN with an Allen wrench. I bought these back in 2014 for solo sidemount diving. Only used a dozen times a year, at most. I have medical issues that preclude any...

Any members have experience with the following configuration: a sidemounted double set left and sidemounted double set right? I've tried the configuration in a local pool and had no issues. A standard stage kit was used - placed on the top cylinder at the neck and in the thread hole of the...