This work done last week Wednesday. Opportunity arose so we (Jim & Mitchell) uncovered the upper ISI and located the 600 lbs on the Keel. Location of the mass is per D1002191-v2. This will have to be removed for Cartridge installation and then replaced in chamber but meanwhile, the ISI is ready for all auxiliary payloads, balancing and integrated testing. The upper ISI was recovered with C-3.