I totally stripped it down and cleaned it up,
bolt, valve tube and all.
popped the cartridge valve out, and cleaned and
unscrewed the top part, the orange seal under the brass cap was in perfect shape.
I reassembled her and gassed her up again,
slightly better, I heard a slow leak, depending on
how I tilted the PGP.
Gas isn't escaping from the front screw area any more,
now it is slowly seeping it seems, more towards the middle of the marker.
I'm thinking my valve is probably wonky.
How do I strip the valve further (does it appear to be necessary yet?)
I've gotten the diagrams but they are kinda fuzzy and I can't quite figure out how to completely disassemble the cartridge valve (have a hunch the leak is due to a bad seal inside)
Someone have a suggestion?
Gonna fiddle with it for a day or two more, then prolly pony up some cash and send it to a pro..:)