Mostly a good first half of the shift. Dropped out of Observing from 15:41 (08:41) to 15:44 (08:44) for Squeezer issue. Took the opportunity to damp ETM-Y Mode2 violin mode. Lost lock at 18:59 (11:59) 5 seconds after "LSC Servo Board Split Voltage High" message. In the process of relocking.