After yesterday's gutting of the ETMX lower QUAD to remove ETM08 and it's fibers from the suspension, today we prepped to put the new ETM13 in.  Travis finished the messy work of filing off the ear horns to the appropriate lengths, and then we cleaned the PUM mass and structure thoroughly with wipes and vacuuming.  We prepped the ergo arm for another optic pickup, and then opened the ETM13 transport cake tin container.  Upon inspection, we saw ~6 quite large pieces of something on the optic face that was up (AR), so we decided to do a cleaning before picking it up with the ergo suction.  Blowing with N2 didn't seem to budge the particulate, so we applied a pour-on First Contact sheet to now dry over over the next few hours.  We'll resume installing the optic into the lower structure on Monday morning.

Travis also took the empty structure opportunity to install the NMBDs (non-magnetic blade dampers) on the UIM in this main chain structure.