The operator warned that the actuation voltages for SDB2 were getting high (around 0.5 V thus sizable actuation).
Lowered the actuator voltages for SDB2 by adjusting the microsprings and the Ty setpoint. Voltages were close to 0.5 V (due to thermal transient) and I lowered them to about 0.1 V. Filter-1 was close to top (3.1 mm) and lowered it 1 mm with microspring 4; Ty setpoint was adjusted by 200 microrad to lower common DC voltage for act0,1,2.

It is possible that further vertical adjustment for (actuator 3, F0-y position) are needed if the thermal transient is still present.