I bought a beat up DM5 for cheeeeeeap here a few days ago. Powered it up, put air to it and it leaked like a sieve.
Started pulling everything apart and putting grease on all the o-rings.
As I move to the reg, I go to unscrew the retaining cap at the bottom and it falls off in my hand. It looks/feels like the threads have been almost worn down, and there was teflon tape on the threads to keep it held on.
I've put everything back together, but when I try gassing it up, invariably it'll blow the top o-ring for the swivel part of the reg.
So...how critical is the bottom cap in holding the swivel in place (and stop blowing out the top o-ring? I'm going to a local hardware store to see if I can find a nut that will fit snugly, but I'm not really clear on if this is cosmetic or absolutely needed.
Additionally, if the threads the cap screws onto are what the problem actually is, and assuming I can't use a tap and die kit to make them any better, does anyone even sell the reg anymore? Or can I put another reg on there and be okay?
Please...be gentle. It's my first gun that isn't fully mechanical