H1 called for assistance at 11:28 UTC since the filter cavity was having trouble locking again. Much like what Oli needed to do four hours ago (alog75384), I paused the SQZ_FC Guardian, locked the FC green VCO manually using the toggle switch on the common mode board, and optimized SQZ-FC_TRANS_C_LF_OUTPUT using FC2 P/Y sliders (and successfully bringing the signal to around 83 counts). After resuming the Guardian and re-requesting SQZ_MANAGER to FREQ_DEP_SQZ, the FC locked without issue, I accepted the new slider values in SDF (screenshot attached), and H1 was able to start observing at 12:03 UTC.

Contrary to the issue earlier tonight, I did not see the CLF DEMOD phase go to zero (it's currently hanging around 171), so I assume the ADF angle servo is working properly this time.