I recently purchased a NOS Scubapro Balanced Adjustable 156 second stage. It breathes fine, but the purge is not operating properly. When the purge is fully depressed, the regulator "locks" into a very strong free flow until the mouthpiece is covered and the internal pressure equalizes. I have another Balanced Adjustable whose purge functions normally - push it in and you get a moderate flow until the purge is released and the flow stops. The newly acquired B/A has a way too forceful flow. Intermediate pressure off the Apeks first stage is 135psi.
Any idea what could be causing this purge problem?
I don't have a Scubapro dealer anywhere nearby and am about to send it off somewhere - does anyone know of a really good Scubapro repair facility? I'm located Davenport, Iowa.