Hi Dano 9258:
Im into 6 year of CPAP . First  6 months were horrible . Every difficulty that can occur . Feeling of smothering , " alien " attached to face ,  constant leaks , irritation , roll over issue from side to side . Mask too tight or too loose .Pulling of mask in sleep and not knowing doing so - or knowing  and still doing so . Wave of  water and humidity or total desert mouth .  On and on - a Full face mask for first 3 years left permanent indentations on face where mask  came into contact . Switched in year 4 to RESMED 10 and nasal pillow - heated hose . FAR better  but still more work to do . Failures on my part to clean hose and mask weekly - issues related to possible   mold etc .  as huge issue re allergies began year 4 .Did not change filter on machine monthly   - failed to replace hose and mask every year or earlier .  On and on . Now use chin strap as first on to keep mouth shut and therefore no more  desert  mouth . Have become very focused on daily reports ( CPAP data )  which for months ( data )  I would ignore . 
Score now as low on occasion as 6.5 AHI - but initially 5 years ago was at 37 AHI and was one of the sleep deprived dead . Would fall asleep at any time as completely exhausted and was unsure why .Work and marriage suffered - kids too . Mis diagnosed for several years . For years had no sense of waking up " refreshed " . Do you remember that - and how great that was . ? 
I gave up on using any sleep advisor or specialist with Apnea -as they did not help . I studied the on line clinical guide for RESMED  CPAP and now have mine  set at 7-18 pressure  . I was dying for more air at 6- 12 - in last 3 years this huge help . But there may be some experts in your area who would be helpful . I could never find one . 
I decided that  I was going to do the CPAP all out - no matter how difficult it was  and have stuck at it so far  . This new Years I have decided to  super focus on it with the new RESMED  APP, called " My Air ". This charts me every day on my computer ( wireless ) with results on several issues and scores me on each . This has been a huge help and  encouragement . One other thing  re  money  in this ,is , although not without a concern , secondary to almost any other purchase save perhaps on  food . Its critical to my health and ability to function from day to day and thats that !  Ill spend on this without question -now - whereas before I was stingy with  purchase of equipment . If I was sure it would work I would purchase pliiolws and even an ape bed if that would help - but there are some out there who would take advantage . 
So keep going - keep at it - if you do not and the apnea continues, or gets worse , it will effect every relationship you have and your entire life . Its that important .! 
Be well and apnea free-  rested !  
PJK