On July 26 Corey and I shot Optical levels of the ISI on MTS2 in the LVEA.

Attached is my logbook page.

Bottom line, the top of the Stage0, at the Alignment/Assembly Posts is level <.2mrad and,

the Optical Table is level to 1/8mrad as well. The level requirement given to me by IAS (Doug & Jason) is 0.4mrad so we are comfortably under that. So no fussing with the MTS with the ISI on top.

Additionally, with this info we can report the relative height of the Optical Table wrt the top of Stage0, basically giving us an idea of manufacturing/assembly variations from nominal:

Sam Barnum give me a 2.913" between the bottom of the down facing Optical Table and the up facing surface in the bottom of the pocket where the alignment/tooling posts position the Optical Table to Stage0.  Our optical survey distance is 2.924 putting us within .011" of nominal design.  I think all concerned would be happy with this small difference from nominal.