Originally Posted by mordantly
none of my 6 regulators have a loose screwing nut. hmmm.
id say +1 on corrosion of the threads, assuming the innards haven't gotten jossled out of position.
Hopefully it is working by now, and you probably already know this, but just to be sure...
If mean that you have the nut tightened up against the the head of the screw that wouldn't cause this problem. But if tightened against the bonnet assembly the nut acts like a locknut would. I'm guessing that's the reason it's even there- to prevent anyone from accidentally changing the pressure.