This is my first machine in 8 years. I had a Resmed S9 before set at 15. The respiratory therapist told me the other day that the Phillips machine “learns” what you need, but I am not getting enough pressure outnof it. It starts at 5 and the hughest it has gotten is 7. My wife told me I have been sleeping like I was before I even started 8 years ago. I feel as though I am not getting enough sleep and it is taking its toll at work. How can I possibly raise the pressure?