Mask fit on S9 Auto set

[readyforsleep]

Having leaks with the f20 touch full face mask even though I do the mask fit each night.( day 4 of a 30 day trial)  I lay down in my normal side sleep position and watch the smiley face.  Mov3 head around...Adjust as necessary.  Last night I slept through major leaks.  It seems like when i leak it is usually around the left or right side of chin.

One idea would be really tighten the bottom straps at night to see if I can eliminate the leaks.  Then slowly ease up on the straps each subsequent night to find the best strap position.

Any ideas?

[readyforsleep]

Last nite I used a chin strap with the f20 touch. It helped curtail the leaks around my mouth. The mask is tight but comfortable enough. Hopefully this works again tonight. Leaks are coming down. Ahi was 3.o which is good for me.