The attached plot has the EndY and EndX Drift monitor signals for 45 days.  The drift mon represents the reflected image on the linear PD of the BRS Beam DC position.

The bottom graph has the EndX Drift which is relatively stable(compared to BRSY) showing the daily fluctuations and trends up.  Maybe these are warming periods?

The middle graph has the entire invacuum period of the BRSY showing this downward trend is definitely slowing.

The upper graph is the EndY from ~3 May when we rebalanced the beam to a time where I've extrapolated the slope (only about 6 days) out to a drift level when we'll need to balance again.  We expect the drift to slowly ease and I've probably overestimated the slope.  The limit is +-16000 so we should be okay into early  next month.