I'm starting starting out at this xPAP experience, but Ive found that the mask liners I make (from Fleecey cloth from the fabric store, taped with low irritation Bandaid strips), has one prominent feature, that any leaks will not be felt as much, probably beacuse the air is now exiting between the pad and the mask cushion, rather than my skin and the mask cushion.
would be nice perhaps to have a visual perspective on leaks (hot air/cool room and thermal cameral perhaps, or a smoke machine.... - BAD BAD ).