(Betsy, Travis) After Richard/Filiberto fixed the broken ITMy L2 OSEM signal (swapping a board), and we confirmed that actuation was evident on the appropriate channels, we went in and finished the last items in BSC8: - Set M0 and R0 Left and Right Top Stage BOSEMs, and M0 PUM and EMTy barrel EQ stops, to account for buoyancy. - Took photos. - Removed all tools, stools and did once-over on chamber "cubbies" looking for hidden treasures. - N2 blowoff of optics (still see surface particulate on surfaces of the 10-20 particles/sq. in. level. Blowing did little to reduce this number. Hmmph. (Note, the FC had been removed early last week and the optic surfaces have been exposed since while unexpected diagnostics took place the last few days.) -Set witness plates. We're hoping Garcia can collect a final L2 TF set in the morning, but we see no reason not to shut the door to this chamber.