On some regs just rinsing is not enough. I make it a practice especially after saltwater dives or dives in fresh water with a lot of particulates in the water to take off the front cover and rinse em. Of course being careful to not press the demand lever. Salt and silt will work it;s way into places that you would never think it could in amounts to cause an issue. Found that out early on with my sherwood regs. They have a nice big ring to grip and turn where as some of the smaller newer regs are smooth. It may look good but sucks when they get stuck and you need to get them off.