I was looking at time series of the op levs to see if one of the ETMs was moving around and it looks like there is something odd with the ETMY op lev. The Op lev says ETMY is moving ~ micron, but Sheila says if that were true we would be unlikely to lock ALS. Attached image shows StripTool traces of ETMX and ETMY. ETMX is blue and green,  ETMY is red and aqua.