Originally Posted by Spider!
When the spool pops back, there is nothing to hold the air in. It's just a can of air held by the spool and the check in the fill fitting. You could leave the remote attached and move the slide check back and forth, which would be the safe thing to do with the muzzle loading bit anyway.
You could push the spool back into place while gas is flowing though, since it is balanced. I was thinking a flow restriction might help the repeatability of the regulator anyway.
A separate fill mechanism is where the matched pair idea came in, using the same setup to fill both markers. I was disappointed in the dueling capability of goblins, so I'm building a hobgoblin.
Makes sense. Hobgoblin would be a pretty sweet name for these too.