I'm having a issue with my Rex regulator. I refilled my 5 lb tank a few weeks ago. I was very surprised when it ran out two weeks later, only feeding a 55gal tank. The first canister lasted a couple months. On closer inspection I found that the perma-seal and fiber washer appear to be stuck in the regulator nut. The nut is now very hard to turn and is stuck at the base of the regulators neck. Is there special way to get the perma-seal and the fiber washer out without destroying them?