[Yokozawa, Ushiba]
We aligned mirrors on the TMSX so that GRX beam hits PD and CCD camera.
We moved GPM1 (upper mirror of the periscope), GST2, GBS3, and GST4 (optical layout can be seen here).
Since beam on GST1 and GLNS1 is far from the center, it is better to realign them after confirming good XARM axis.