Smooth and final finish Rudder pedal brace Countersink and rivet rudder pedal brace to F601N left stiffener Dimple F601K-1 Firewall Recess and rivet sides together. Rivet Firewall recess in place in firewall Tempoarily install Center Cabin Cover and matchdrill holes in firewall recess Drill holes for nutplates in firewall recess and dimple