Now that we're in vacuum I have switched the QOSEM M1 satamp current from Constant Current mode to Sum Feedback mode. This adjusts the current to maintain 9V on the QPD (T2600172). This means that the SUM channels for F3 and RT have stopped saturating since the current has been slightly lowered to those LEDs.

There was some movement in the QOSEM positions, but nothing moved very much (ndscope). The most movement was on F3 Y, which moved 0.5 µm