I ran a few static tests yesterday on ETMY HEPI.  Things like linearity & range of motion etc.  Attached is a two plot of trends on the HEPI Cartesian basis IPS.  X & Y have moved a few ums while Z and Rx & Ry are pretty steady.  Rz has rotated a little more now out to 22urads.  Again this is good for the alignment now as long as it doesn't go further.