Since I started this thread I have also begun mouth taping. My wife is happier because there is no longer the sound of air escaping my mouth. The number of "events" recorded by my machine has gone done, although I'm not sure that means anything.
At first I had trouble falling asleep with the mask on. After I started falling asleep, I had trouble staying asleep and would wake up an hour later an be unable to fall back asleep. Then I got more used to it and was able to fall back asleep and stay asleep longer. For me, the main message was that you have to be patient and not give up if it doesn't work great at first.
My cpap therapy is working pretty well, but I have a problem with air blowing out of my mouth. Maybe I should say that my wife has a problem with it, since she's the one bothered by it. The problem is not that I'm breathing through my mouth; my chin strap takes care of that. Instead the machine is blowing air in through my nose and some of that makes its way into my mouth. Sometimes while I'm waiting to fall asleep my mouth will suddenly fill up with air. After I fall asleep this air must be blowing out through my lips and making an annoying sound.
I understand that a full face mask might be a solution, but I have not been able to find one that works for me, so I have stuck with my nasal pillow.
Any suggestions on keeping the air from entering my mouth? This is my first post here; it seems like a very helpful forum.