If you're seeing a 50-60 psi drop when you breathe a reg - I have to believe something is wrong - there is some limitation on the high pressure side.
Is there anything common? You say different tanks, sidemount so at least two regs - does it do it with both sets of regs? I have dual shearwater transmitors and there is no pressure drop that I see. Over time, yes, getting in and out of the water yes but never while in a constant state have I seen pressure drop other than a semi closed valve.
Is there anything common? You say different tanks, sidemount so at least two regs - does it do it with both sets of regs? I have dual shearwater transmitors and there is no pressure drop that I see. Over time, yes, getting in and out of the water yes but never while in a constant state have I seen pressure drop other than a semi closed valve.