We have had loading problems with load lock A. When AMAT field service was here a couple of weeks ago, they calibrated both load locks. But they recommended that we use load lock B as the primary lock. -- maurice at stanford.edu Maurice Stevens Stanford Nanofabrication Facility CIS Room 142, Mail Code 4070 Stanford, CA 94305 P. (650)725-3660 F. (650)725.6278