Checking the ETMx OpLev in preparation for in-chamber activities starting soon, I noted that the OpLev that was re-centered on Feb. 15 (40559) is no longer centered on the QPD.  We will probably want to re-center the OpLev again before removing the Quad so that we have an in-air reference to align back to.  See attached trend.  It appears that the OpLev Pit and Yaw are continuing to trend upwards even after the vent has completed.  This is possibly due to temperature, but this gives us some (small magnitude) doubt to the reliability of using the OpLev for Quad alignment.  Luckily, we also have ALS and PCal to use to verify our pointing.