Ok, why do you think I may be pulling the mask off at night? I use the nasal pillows and have no problem with leaks when the nasal pillows are on my face. At some point of the night I'm taking off the nasal pillows. last night my husband woke me up to have me put it back on. I thought it was the exhalation pressure and have switched to the cflex. I am more comfortable but that hasn't made me keep it on. My Dr. has lowered my pressure to 8 and will add a point every week to get it back to 10. Any suggestions?