I measured the beam spot on MC3 yesterday, September 11, 2017, and found that it's +2.11mm in pitch, and -5.82mm in yaw.

Measurements from July 17, 2017, show similar results:  +2.26mm in pitch, and -5.84mm in yaw.

Above measurements are after the Montana 5.8M earthquake, and the measurement below is before.

Measurements from March 17, 2017, show: +2.16mm in pitch, and -5.70mm in yaw.