I went to resmed which have their own sleep lab in sydney to pick up my machine. My titration in hospital was 10. i decided to go apap and the technition said we will set it between 4 and 20 !!! and it will sort itself out. I was exhausted for 4 months before I found this site. what a waste of time and health so i uped the bottom and dropped the top and immediate relief but still not what i was hoping for and then i gave cpap a whirl and felt much much better. I changed back to auto the other night to give it 1 more go and totall failure so back to cpap and staying there. I have no idea why apap wont work for me..