BRSY has been continuing its slow drift off of the photodiode, and was about 2-300 counts from the edge, so this morning I went to EY to try to recenter it. I think I was successful, but will need a couple hours to tell. Right now it's still rung up pretty bad, so we will need to wait for it to damp down on it's own a bit before trying to re-engage it. For now, operators should use one of the seismic configurations that doesn't use BRSY.
Looks like BRSY is closer to center now (at ~ -3000) than before, but given the current drift of ~1500 cts/week I didn't get as much margin before the next adjustment as I'd prefer. Will probably have to do this again in ~2 months.
Remember it will probably drift up because of the slow thermal equilibration for the next 1-2 days, probably ending up above 3k counts. I think that is very good. Good job, you have mastered the BRS!