Just curious, whats your serial #?
I ask this because I had this same issue on my Geo. I could crank the reg down, air it up and easily back the reg off with one hand. I had this happen during play as I would suddlenly experience my Geo degassing where the reg screws into the body. First thing that fixed it was the ST kit. The reduced vibrations seems to have pretty much cured the reg backing off from vibrations, second was a fatter oring that made it tighter when it screwed in.
Last edited by Brules : 01-19-2010 at 04:31 PM.