Some machines have a "mask fitting mode" where it generates maximum pressure allowing you to tighten the straps just enough until the mask isn't leaking. Perhaps yours does too?

The funeral home usually notifies SSA of deaths as part of their service (along with other paperwork like ordering death certificates). Perhaps you can avoid the wait?

Absolutely, and for best effect, use only Flamin' Hot Cheetos.

Hoku - How Do I Feel (The Burrito Song)

Maybe butter sauce on zoodled dill pickles.