Thanks Pugsy. Yeah, I did set my humidity level at maximum. I'm using a Res Med Air Sense 10 CPAP. I think pressure is set to 12.

Sorry, that would have been helpful in the OP. I'm using a full face mask.

Hey guys, CPAP newbie here. I've been using it for a few nights and seem to be slowly getting used to it. The biggest problem seems to be dry mouth and lips. It's so dry that this seems to be the thing waking me up -- my tongue and mucous membranes are stiff because they're so dry. It's an awful fee...