The IMC alignment did not survive the recent vent, swap of dummy mass from HAM2, and installation of PRM and PR3, and bellows removal from HAM3.   Changes to the PSL have changed the input pointing into the vacuum system.  HAM3, while in theory seems to be OK, has not been fully vetted at this point, and there are some changes in the way MC2 is hanging in it's cage.

Changes to HAM2 include:
- a rotation of ISI by 19um
- an elevation change of ISI by 30um
- a shift of HEPI by 4um East (so small, likely thermal)
- an elevation change 1-4um in HEPI (miniscule)

MC1
- length -9um
- pitch +549urad
- yaw  +307urad
- MC1 also had a side OSEM flag that was touching but is centered now

MC3
- length -42um
- pitch +199rad
- yaw  +95urad


HAM3
- bellows removed.

MC2
- length -11um
- pitch +89urad
- yaw  -12urad


PSL
- beam from PMC is a bit high on it's alignment iris, and significantly better centered after the room temperature was lowered by MichaelR, and the laser is again thermally stable.

- alignment shift on my second alignment iris on the leakage beam from the bottom periscope is now attributed to a mix of changes made to the pickoff beam splitter for that iris made while I was out with the flu, and the beam shift seen coming from the PMC.

- the current beam coming from the PSL doesn't hit either set of marks we used for our previous alignments.  The PSL beams marked on the wall have two locations marked - one in-air that we used to do the original alignment of the IMC, and one under-vacuum when the IMC was locking well.  The PSL beams are now splitting those marks.


While some of these change seem small, I have concerns that a stuck or damaged sensor could be relaying false information about the state of a system.  I believe it's possible that the tilt and rotation of the HAM2 table, when combined, is having a greater effect than just looking at the one set of sensors for each degree of freedom.