having trouble with burst disk leaking air. Last time I topped off my tank to 4500 psi no problems. Two weeks later it's time to top off tank again. Hook up take, open value to equalize pressure and burst disk is leaking air. Remove burst disk bolt and remove the disk (first pic is the first disk). Second picture is replacement disk on right and the old disk on left, notice the blister on the old disk. So I replace slightly tighten burst disk bolt, open tank value it gets to 1000 psi and air begins to hiss again from the burst disk area. I take a look and see the same blistering on the newly installed disk??!! (See third picture). So what gives?? Can anyone help me with this?





