Posted by gary (208.133.220.222) on February 09, 2000 at 17:44:56:
In Reply to: Problem may be with the MASK posted by John B on February 09, 2000 at 16:50:56:
the nonrebreather masks they provide me never work well anyway,
so I end up "assisting" the 3 valves by pinching and poking them, holding them shut, etc
it's pretty cheap plastic and I think material failure sets in real fast exposed to pure oxygen
just another little detail