Hi Kate,
This all sounds so familiar.
I'm a mouth breather so the nasal mask wouldn't work. I found a fit in a full face mask. I couldn't stand it. It leaked constantly. They had the air set so it was like a someone started a plane and it went into full pressure right away, then settled down. That was reset as soon as a doctor could write the order. With the non-fit, it didn't work. They gave me similar one. I really struggled with that and because of all of them, I absolutely stopped using c-pap. Silly me for thinking that was all there was. I just needed to work with someone who let me try more than a few masks, because they do fit different.
The main thing to do was to make sure that I had the right size. Then to find the fit that I needed. The one was perfect. They also showed me how to adjust the fit and that might be to slide my fingers along the edges, which I struggle with when my allergies are misbehaving. That sometimes makes a difference and provides a seal. This works without allergies the best. I sometimes have to adjust the top and side straps as well.
Drooling, that's the worst feeling. Sometimes I'm sensing it and not drooling as it isn't wet. When I do drool, it's always out the right side which is strange, I usually sleep on my left side.
I find that if I get frustrated, I take the headgear off for 10 minutes up to 1/2 minutes. Then I do something for this short time that helps me to relax, maybe even to come here and to say hello.
Never give up. There are enough people here to offer suggestions. Hopefully your doctor and his/her staff know what is the best things or maybe they will refer you to a Sleep Doctor.
I wish you well.
Janet (SleepApnea.sleep-disorders.net)