I've had the leaks problem as well with the Swift II. The teflon tape did stop a good amount of them. I also wrapped the tape around the air tube where it connects to the mask, and around the stopper. This seemed to help the most. The other thing that I found is that if the straps are not too tight,...

I also found the Swift II to leak way too much as well. I will try the silicon and teflon tape fixes as recommended. If I had the mask where it wasn't moved at all, it is really quiet, but once you rollover, the headgear would pull the nasal pillow joints apart just enough to let it start leaking a ...