re 15205,

Attached are trends from the last 20 hours.  There is the ALS REFL CTRL OUTPUT(um I believe) which Nic's servo is attempting to keep zero, next is the HEPI Longitudinal Location (nm,) the servo is on when this is changing unless HEPI has tripped and is reacquiring (which did not happen.)  Third plot is the Horizontal pringle of HEPI(not sure of units) giving some indication of platform(or maybe just actuator) distortion required to move in one dof while keeping the others where they started.  Last is the OpLev Yaw, the HEPI RZ will not be informative as that loop is closed and will appear to be perfect.  The OpLev Yaws appear to move some but I don't think more than when the servo is not on.  You can certainly see the tidal effect on the REFL CTRL when the servo is not operating.