Spent the morning installing the Linear Actuator Mount for the flaps. This mount, a steel welded assembly, attaches behind the pilot's seat and is reinforced by the Rear Seat Panel, Seat Back Side Angle, Seat Panel Angle, and the Flap Mount Gusset. Twenty-two rivet holes later and it's set in place. Drilling 22 rivet holes, twice (pilot hole then final A5 rivet size) in a solid piece of steel took a bit of time!
Looking forward from behind pilot's seat: Flap actuator mount installed.