The remaining parts were removed yesterday for priming and are curing now. Plenty of access to work on the rudder pedals now.
First the rivnuts were set on both center skins:
The bracket is touching 1 rivnut, I need to verify that once the stops are in place:
They move quite free without any additional work. The left pedal needs around 0.7 kg to move and the right one a bit more, around 1.2 kg: