Started with drilling the edges of the baggage floor to the supporting L angles. Next I installed the lower bearing support for the nose gear, then the multiple countersunk A5 rivet holes surrounding the 5/8" hole in the firewall stiffener. I had to disassemble the whole seat back area to drill to size the seat back edges where they meet the upright support. I moved to the rudder area and drilled for AN3 bolts through the lateral pedal bearings. Finally, I drilled the hinges for the rudder pedals to A5 rivet size. Whew. Lots of little stuff to clean up before moving to rivet phase.
Lower bearing support installed and countersunk holes around upper tube
Lateral pedal bearings with bolts and pedal hinges drill to A5
