Based on my HAM2 install pictures of the IMC Trans beam in vacuum steering mirror (ROM RH2), it’s position is closer to the blue oval (that represents the front of the optic) in the attached diagram, than the location of the mirror in the DCC drawing.

The beam shift in yaw of -7mm on IM1 has also translated the beam on ROM RH2, and it’s my belief that the IMC Trans beam is now clipping on the edge of that optic.