For the outer pedalbrackets I was able to install threaded bushings from the cockpit side. This was not the case for the inner brackets (not enough space). For the inner once, I installed the bushings from the bottom outside of the fuselage. In order to be fully aligned with the bolt, I used the bolt itself and fixed the bushing to it, while I screwed the threaded bushing togehter with bolt perfectly aligned in place. Later I did some minor adjustment to the pedal play. After smooth operation was achieved, I connected the nosewheel steering to the pedals. All the bolts were drilled for safety wire.