The Atomic regulators have what they call a "seat saving orifice" on the second stage. The orifice only contacts the rubber seat when the reg is pressurized. Would this lead to the risk of water backing up through the regulator if it were soaked without being pressurized? (Just like rinsing a second stage with the purge button pushed in). I talked to my LDS who sells them and they said they had never thought of that possibility but had never seen any probs result from soaking them just like any other reg. Can anyone tell me why water wouldn't back up through the reg if it is rinsed nonpressurized? Thanks