This morning ALS/green arm alignment was touched up.  But Y-arm kept dropping out of lock eventhough it had powers around 1 (think this might have been issue of Guardian fighting us &misaligned ITMs.  The ISS Ref Signal was also moved from -2.02 to -1.98).  After this we had issues with the PRC (Keita pointed out saturations on PRM, and so we (1) "Cleared History" for the M1 LOCK P&Y paths & (2) restored the Pit & Yaw biases to where they were earlier in the morning.   Then we plugged through & locked up the ifo.

• 8:48am:  Jeff/Peter rolling chiller from Receiving thru LVEA to Mechanical Room
• 9:59am:  Jodi/PeterK at MY
• 1:30-1:40pm:  Kyle walked the LVEA for any possible roof leaks:  None found
• Ifo handed over to Commissioners in the afternoon