Day 2
So last night I first tried just sleeping with the Mandible Extender (ME). As I drifted off to sleep my partner woke to tell me that I was gently snoring. I had asked him to do this so that I could put on the CPAP mask as well.

I've changed to just a nasal mask as I'm convinced the full face mask simple aggravates the problem by forcing my chin back even more.
I woke up only a couple of times during the night but otherwise slept much better that the night before. The mouth ache went after about 1 hour of waking and removing the device. The face pain from the mask was much less from being able to use the nasal mask. It's much lighter and therefore doesn't need to be strapped on so tightly. Although it still feels like it's cutting into the top of my nose after wearing it for 8 hours straight.
I'm just going to try wearing the ME and the nasal mask for maybe a week or so, until I'm pretty much used to the device as possible. Then I will think about adjusting the device again to bring my lower jaw further forward.

At the moment my life seems to be a balance or pain and tiredness. Managing these two is a constant battle of adjustments and guess work trying to find the perfect solution to minimize them both.
I think I should start using at out of 10 factor for both:-
pain/tiredness where 10/10 would be in agony and if I closed my eyes for just a second I would fall asleep
At the moment, after being awake for 1.5 hrs I would put my self at 2/5, meaning I have minimal pain and I feel tired enough that if a lay quietly for about 30 mins, I may fall asleep.
Pain
0 Pain free
5 Moderate Pain - Pain killers may be required
10 Throbbing agony - Sleep impossible - Unable to wear Mask / Mandible device
Tiredness
0 Bouncing off the walls - May need to cut down on the coffee!
5 Relaxed - Maybe a little dozy - Full sleeping may not be possible
10 Closing eyes for just a few seconds will result in falling into a deep sleep