hi pamster----i am having the same problem with the air filling up in my mouth..it is such an uncomfortable feeling.i am waking up at 3 am every morning with the paper mouth too..last night with the heat i couldn't even have the mask on.. the sweat was pouring down my face and filling up in the nose mask.i ripped the whole thing off and spent the whole am crying...it is such a b---ch when you try so hard to do everything to feel somewhat more awake and all i have are more added stress and depresion --i fail at all i do--maybe i should just let things be and whatever happens will happen?? at least it will be over! moonstar