Finally back to work after a couple months off as I prepared to retire and get an airline job. Primed the after fuselage skins, longerons and several miscelaneous parts. Got several things done on the center section. Match drilled all the ribs to the skin, drilled the F-623 ribs once I convinced myself that being perfectly flush to the edge of the skin wasn't that important. I need to re-make the spacers for F-704 since I made them too narrow to actuall provide the right spacing.