RE: leak advice
An F10 should not leak so much at 9cm fixed. I am assuming that it was working fine for 5+ months.
Things to evaluate/try:
1) How old is the mask cushion? The silicone may start breaking down.
2) have you Adjusted your straps' tension lately. They may stretch over time and your goldilocks setting may have moved due to this.
3) when the machine starts, do you lift off the mask a little bit from the face to let the silicone seal to inflate?
4) are you tightening it too much? In my experience with F10, I would tighten the top 2 straps snug and the bottom 2 were left much loose.
5) Have you tried mask liners? In my experience, they made the whole Process much manageable. They eliminated the need to shave before masking up too.
PRS1 Auto & Dreamstation Auto w/ P10 and straight pressure of 8cm
RE: leak advice
I would tighten the top 2 straps such that the top part of the mask cushion would be tight at the bridge of the nose(when the cushion inflates). But the bottom 2 straps were loose enough that I could grind my teeth without any issues.
I used to cut mask liners out of an old worn out tshirt. You can google 'DIY mask liner'. Somebody has a template online that I used to cut Mine.
PRS1 Auto & Dreamstation Auto w/ P10 and straight pressure of 8cm
RE: leak advice
Interesting
First big leak is between 2.5 and 3hours from when I'm asleep. from the 13L/min up to 100+
I either have no more for the night, or a re-ocurance every 45mins.
I wonder if I'm simply rolling over or if it's my body temp dropping and I'm getting restless?