Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Nope, it’s a Mk17 EvoWhat first stage are you using? It's not a piston 1st stage per chance?
It does indeed! It’s not every dive, but when it does it, it can be a mood killer. I suspect it might be an easy thing, just getting it calibrated again might reset whatever is resonating. I just don’t know how to take it off the Scubapro hose so I need to take it to a shop. Since I’ve been mostly diving sidemount regs lately, I keep pushing it back.Poo, was hoping it was a piston. How very strange. I'd overhaul it and hope for the best. Whistling would irritate me to despair.