Now with proper wood floor boards inside cockpit area, I could resume working on the Aft throttle structural mods to fuselage. With my paper template still in place, I marked up the location of required holes in F804C-FL and F804C-AL. I open up both holes with unibits drill and elongated them with more or less success with my dremel router. I made a preliminary alignment check between hole in F805 frame and the ones in F804C-FL and AL. Looks ok.
Later in the evening, I open up the required hole in F864A-1 for the throttle connector rod to pass thru toward the rear. Once that was done, I reassembled the fwd throttle quadrant and relocate it temporarily inside the aircraft.