Originally Posted by mattUK
I may try getting hold of a newer spring tho, as when putting the regulator back together admittedly kept on doing it wrong lol, however what was funny was that the trigger return worked everytime (just didn't fire), even with the barrel inserted, until I actually had the springs in the right way - then the trigger freezed up again.
Think my tanks low on pressure too, so that wasn't helping either.
Hey, if it worked the other way, I'd say leave it. A new spring couldn't hurt either, it could be that yours is a little stretched and worn. Definitely try with a full tank of air, and do consider lubing that trigger assembly generously.