ITmy and ITMx HWS have both been aligned so that the green beam from the X-arm returns through the two irises and onto the respective HWS's.  To do this I had to move both of the upper and both of the lower periscope mirrors about an inch to the right. No other optics were touched.  I took some pictures of the original beam path.  The beam going to the ITMy HWS looked clean as came onto the table (image 1), but clipped the periscope (images 2 & 3).  There were a few beams coming from ITMx, but the brightest one missed the periscope entirely.  I aligned the brightest beam to the HWS.

Once the green beams were returning to both HWS cameras, I tried looking at the HWS camera images to fine tune the alignement.  I could open a camera image using the command

 /opt/Hartmann_Sensor_SVN/release/bin/stream_image_X/distrib/stream_image_X/opt/Hartmann_Sensor_SVN/release/bin/stream_image_X/distrib/stream_image_X

but I couldn't see a beam in this image.  I tried shining a flashlight on the cameras, including without the Hartmann plate for ITMy camera, but the image didn't change.  Either the camera exposure needs to be increased (seems doubtful), or the camera image isn't updating properly.   Once I've figured out how to get the camera image I'll go back and fine tune the alignment.