While studying the improvement made by stray light modifications over the break (summary alog soon), I found that the coupling was minimized by changing ITMY R0 yaw offset from -300 to -250. We want to change the settings before my alog, hence this mini-alog.
I have set and saved that value of -250 for the IY reaction mass yaw offset in both the safe and observe SDF files. I did this right around when DRMI had just caught lock during this acquisition, so it seems fine (as we'd expect) for locking with this very slightly different offset. Attached are the safe and observe snap screenshots of my accepting the new value.