Summary: I forgot that AS90 is now unreliable because of some test that is going on that I can't seem to find any record of, random connection errors, odd camera image for MICH dark locked, and SRY not locking. Brought back to NLN for 14min before it lost lock again.
Long version:
After the lock loss I tried to relock and had some issues with DRMI. I played around with the alignment a bit and eventually got to lock on what I thought was a PRMI because the POP18 (pink signal on the striptool) and POP90 (light green) were both up, but there was no AS90 (purple). Confused, I tried to figure out where in the SRC cavity the misalignment was, and couldn't find anything but noticed that the spot looked odd for a PRMI. I decided to do an initial alignment and couldn't get Xarm to lock in IR in INPUT_ALIGN. The usual gain trick didn't work at first, but on the third try or so, it finally did. PRC was no issue, but then I couldn't get MICH to lock dark. I would let everything swing and look at the alignment via the camera, and I made it look impeccably symmetric. But when I went to lock it, there was still more light than usual and nothing I did really seemed to change it. I thought that the camera exposure may have been changed or something but looking back at the Guardian it hasn't been changed in a while, and even when I played with the exposure by hand I couldn't get it to look any more familiar. I eventually moved on and then couldn't get SRY to lock at all. I adjusted the spot on the AS_C PD numerous times, I tried adjusting via the camera as well, and nothing seemed to work.
Running out of options I tried restoring all of the optics and then going back to try yet another initial alignment. It was the exact same situation as last time. I eventually got SRY locked, but not because I did anything different. It just felt like working. Okay, then I get back to trying to lock DRMI and again, it seems to lock on a funny PRMI. After banging my head against a wall for a bit I eventually vaugely remember a background conversation while I was doing some other work about someone mentioning that there was going to be some tests with AS90 and the purple trace would not behave normally. So I tried to move on and then Guardian started complaining about connection errors. The channel seemed fine and re-requesting the state solvled the issue. This hapeed a few more times though, no idea what was going on.
After all that there was very little issues and it came right up. BUT as I was writing this it just lock lost. Lovely.
