Problem karlsuss2 2003-12-12 18:02:15: Karlsuss 2 still has vacuum problem for 4" mask

[kaima at snf.stanford.edu]

I need to use 4" mask, but I still cannot get vacuum. It always tells me "loss of mask vacuum". I put the same mask holder to Karlsuss 1, no problem.  And the 5" mask holder has no problem with Karlsuss2.