Update - I tried refitting the Airfit following the advice and video mentioned here, trying not to overtighten the straps, and unfortunately the result was the same, I would wake up after a couple of hours with my face hurting from the edges of the inflated seal cutting into my face. So, I went back...

Sure sounds like you're over tightening the mask. You don't mention having gotten a replacement cushion - if the cushion is a year old, it could be worn out. If this is the case, I wouldn't recommend switching masks. I'd return to "from the get-go condition" when you "loved it", by ordering a repla...

Hi, after my last sleep study a year ago revealing that I had not been receiving adequate cpap therapy, due to my using only a nasal mask and having constant mouth opening, and not enough pressure (10) after aging 10 years and gaining 15 lbs since my first sleep study, I was increased to pressure 12...