Cascade manipulator broken

[mihirt at stanford.edu]

All,

      Gaurav, Duygu, and I performed tests on the Cascade last night.  
We determined that another manipulator is broken. The part has been  
identified and we will begin the replacement process shortly.

      There are 3 remaining manipulators. Please be careful, or we  
will all be reduced to doing diode measurements. =)

      Do not pull the broken manipulators out and attempt to use them  
for 4-point measurements. The problem is in the contact, so you will  
probably not be getting accurate results.

      - Mihir