I've read and learned a lot from this blog. Thank You! What a caring bunch!
Since this is my first post, a little detail:
diagnosed with ~12AHI and using a dreamstation with humidifier. For the first two months I was using the mask that covered nose and mouth from resmed. F10 I think. The leaks would wake me up and tightening also caused pain which was a problem. AHI remained steady in the 8-11 area. I received a pillow p10 and used a chinstrap to keep my mouth closed. Within a couple of days it dropped from 8-11 to the 3-6 area. The excitement of the dropping #s has me looking for more. The advice may be to wait a bit more on any of the changes, but I figured I could still post some results. This first SH snap is with 8.5min and the P10.

After reading many posts, i bumped the minimum to 9.0 which knocked down Hypopnea

I thought I would then try min 9.5, which further knocked down Hypopnea but bumped up CA a bit.

The chinstrap/headgear that i use is uncomfortable, so I am going to try one of the cervical collars and some 3M micropore tape that I read about.
thanks in advance for your thoughts/ideas,
Tim