New Airfit F10 possibly too small

Hi everyone.

I must pay myself for all my CPAP equipment because I cannot use my Medicare outside of the US and my Panama insurance does not pay for this treatment. I am doing much better with my nasal pillow masks, but I continue to need to tape my mouth shut at night. I would like to find a FFM that fits. I have a recessed jaw and tend to breathe through my mouth at night. I recently purchased a new Airfit F10, for her, size small and it is a bad fit. I also tried it with the mask liners that did not help. The mask is too snug in the nose bridge area and leaks under my lips. I am now thinking that I might do better with a different size. I have insurance on the mask, but I have a weird situation here where it is not too expensive to receive items, but to to send any packages out costs a fortune. So I cannot return or trade the mask. What I would like to find is either a used F10 for her in Medium or a used regular F10 in a small. If anyone has one for sale or knows where I can get one, please let me know. Thanks.

I remember seeing a thread here about trading/selling masks and other supplies. I don't remember the name but perhaps someone else can provide the link.

Its called.......The great pillow exchange..... this thread is a godsend for those of use that do not have the luxury of insurance.
Good luck PEF
Nan