Modifying a Dreamware Nasal Pillow

[Feedsack]

I am trying to get better fit from my dreamwear nasal gell masks the one with the protuberance to insert into your nose somewhat.  It appears that this masks will be the best for me but it needs something to make those bums longer. I have some nasal vents made of the same or similar silicone and am thinking of trying to insert them into it without causing undo pressure change. Since I have a auto bipap machine this shouldnt count right?
Anyone else do something like this?