That's because CIS gas lines are pumped out. No N2. Aryan On Dec 15, 2011, at 6:50 PM, Kyeongran Yoo <raneeyoo at stanford.edu> wrote: > Hello! > > I finished it early. > Cascade is free until 8:30pm. > > One thing is that I was not able to lift up the optical microscope. > thanks, > Kyeongran