Thank you very much. I’m sure you’re right. My equipment provider and my physician worked with me, but cannot solve it. When I sleep on my back, my mouth slides open and defeats everything. So when I sleep on my side, the pillow pushes the edge of the mask against my face and by morning, there’s a Grand Canyon size gully there that lasts for hours. Maybe i should buy a cpap bed pillow! By the way, I have found that Neosporin ointment quickly, solves nose pressure sores