I am 4'11" tall 200 pounds and my titration is 19 on my CPAP. I have never been able to find a full face mask that doesn't leak. My face is pretty small. I've tried several styles and sizes. (I tried a nose mask and the titration was so high it blew my mouth open even with a chin strap.) I have constant dreams about my mouth being dry and when I pour water in my mouth it won't get wet. That dream wakes me up several times a night. When I fall asleep the high pressure blows my cheeks out like a chipmunk. I'm still breathing through my nose because my tongue blows up to the roof of my mouth and blocks my throat. My machine has a heated humidifier on it but it still dries my mouth so bad. I'm so tired.