As part of the flurry of activities yesterday, I took TF's on the HAM5 ISI. They look messy, but I realized when I got in this morning that some of the suspensions were not damped, so I think I understand why my data looks bad. There are extra peaks that look like suspension resonances, but the responses look kind of like L1 HAM5, if you squint and ignore some detail.I've attached images for my TF last night (first 2 pdfs), and my best guess at the equivalent at LLO (second 2).

Additionally, we had an actuator that was plugged in backwards ages ago, that we had fixed by adding a gain of -1. Somehow this electronic fix had disappeared, so one of the actuators shows a -180 phase. The plan was for Fil and I to go in, take the plug apart and fix this at the chamber wall, because accessing the cable on the actuator is almost impossible. But, it turns out that the planned fix involved cutting the cable, and we don't have length to spare on this one cable, it barely reaches the flange uncut. So, I went in and unplugged the cable and replugged it correctly, completely blind. Only took about an hour.