i recently got a used victor firepower torch kit and everything works good except the oxygen regulator. the high pressure side works but when i screw in the T-screw, the needle on the working pressure side jumps around and then goes all the way up setting off the relief valve on the regulator. i have a spare Harbor Freight reg to get me by for now but my question is do i just get a new regulator or get this one repaired? and where could i get it repaired? i live near Shreveport, LA. Thanks