Scubagolf
Contributor
+1 Sea Cure.
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In the meantime before trying out the other proposed fixes above, continue with alternate positioning to take contact pressure of the standard mouthpiece off your lower gum. Biting down harder works, but then you will have further problems with resulting jaw fatigue over several days of repetitive dives.My reg mouthpiece rubs my lower right gum. I have changed the mouthpiece and it still occurs. I think it is because the reg is pulled down to the right. Any suggestion besides biting down hard on the mouthpiece?