Dissassembly Guide for FX Royale?

UPDATE

It must have been a loose gauge.

I purchased a complete rebuild kit, including the reg, and gauge from AoA. Since it was a slow leak I was going to wait to re-seal the rifle until my plant shut down at Christmas. Last Saturday I decided to put the new gauge on. I removed the bottle and with no air showing on the gauge I started to unscrew the gauge. Right away I realized the gauge wasn't screwed in tight. Since I already had the new gauge I put it on and tightened it all the way down. The old gauge was bare threads and I used teflon tape on the new gauge.

Since last Saturday it is holding exactly where I filled it to.