Unpacked and tried new squeezer yoke. It is much wider and heavier than my other yokes and worked great. It had long enough reach to rivet the rudder bar support in place.

Cleaned firewall recess parts and removed rudder bars for better access. Worked with Ellicia to figure out how to set the rivets where the gun couldn't be used because access was blocked by the fuselage rotisserie bracket. Figured out Ellicia could hold a back rivet plate against the firewall and I could back rivet from the cockpit side.

Mixed up pro seal, applied a bead around the edge of the firewall recess and riveted the firewall recess in place. Also installed a wire feedthrough for the contactors using pro seal. Cleaned up tools, clecos, and extra pro seal on the firewall. Looks great! And was easier than expected.