Fabricated another .032 spacer to replace the too-short one I made yesterday. (Actually made 2 before I got it right.) Filed top front edge of rudder horn to fit against rib, per drawings. Bolted rudder horn to spar. Cut and filed notch in R-404 rib to fit around bolt. Assembled, aligned, drilled and clecoed spar/rib/horn/spacer assembly. Didn’t have a 3/8” bolt, so used a rod end bearing and thin jamb nuts. (Note: When test-fitting rod end bearing into K1000-6 nutplates, the bearing does not appear to screw into the nut plate very easily.)