Thinks to do before the NEXT realignment:
B, tie 4 ancher bolts on table legs to the floor
C, tie 4 dog clamps between table and chamber
D, check the locked position of the 4 x 4 positioning screws
E, check bellow protecting 4 tubes are not shorting
A, here is the concrete slab cut
It reminds me to check the IFO vacuum envelope dog clamps on the chambers to floor with torque wrench.