It seems to get tighter over the course of the night! When going to sleep I adjust it so that it's as loose as it can get without leaking. Pretty easy to do, and at that point it's more comfortable than the P10 for me. But then when I wake up it's pressing so hard into my nose that it's quite painful. The edge of the silicone is almost cutting into the skin at the edge of my nostril. It's as if the adjustable plastic in the headgear decided to contract on its own during the night. Same thing has happened every night I've tried it. It's the opposite problem I have with the P10, which tends to loosen and the headgear tends to slip off the top of my head.
Any ideas or advice?
FWIW, I do have a fairly large head -- I wear a men's XXL hat. Don't know if that might be a factor here. But I think they only make one size of headgear.
Thanks!