Varmit

Am quite new to using a CPAP device -- ResMed AirSense 10 AutoSet with full mask -- and not sure whether my experiences are due to newness or there is a difficulty with the unit. Have 2 issues: 1.About 4 hours into usage, sleeping on my back as normal, I'm awakened by air leaks squawks, squeaks, etc, especially around the lower jar area. Any attempt at minor adjustments makes the situation worse enough to shut all down, remove mask and start all over. If this doesn't work, I've just stopped use for the night -- not ideal. Otherwise, I've lain nearly awake, trying to keep the mask sealed, until a reasonable hour to get up. Is this a normal problem caused by gravity/muscle relaxation?

1. As an alternative or combined with the leaks, my jaws and cheeks are forced outward, breathing must be done through my mouth whether I want to or not and the pressure is such I feel overwhelmed and find breathing to be at very fast rate. (No, I do not have panic attacks, nor am I anxious at this point, just annoyed.) Is it possible, the AirSense has jumped it's setting of 12 or that the setting is inappropriate?

Yes, I've called our Medical Supply office where I received both the equipment and basic instructions. All suggestions are welcome.