I've been looking through this forum for a little over a month and it has been a wealth of information. Thanks.
Brief history
I was diagnosed with Central Sleep Apnea, Opioids probable cause. I spent a month using the S9 VPAP Auto, until I went to my sleep doc for the one month followup when he said I was put on the wrong machine according to my titration study. Maybe some of you can make sense of this;
So, I started using Respironics System One Bipap AutoSV Advanced 960P on July 29. It's not going very well. I've tried different masks, Wisp, Zest, Comfort Gel nasal(this was used for my titration study) and just recently, Mirage Quattro FF. The Mirage was a sample and It's to big. Zest and the comfort gel I think are to big also. At least according to my measurements. The Wisp fits but my mouth drops open while sleeping. I was given the Ruby adjustable chin strap but it's already stretched out. I can't get another mask for about a month, I have Medicare. I'm going to try to get another fitting with my DME. They've been pretty good to me. I have small facial features.
I've been looking over my data, thanks to you folks, and it looks like the machine is doing a good job until I really get into a deep sleep. Then it seems to be unable to cope with my irregular breathing. I'd appreciate any of your thoughts. Let me know if you'd like more info or screen shots.
Snowleopard28
Here's a couple pic's from SleepyHead:




Here's a couple pics from Encore:



