Hello I saw your project. It looks nice. I would advise if you are using wood then use bearing on all joints other-wise it would not be precise. You have saw my DIY project, the link of my project is in my signature. I have used 4 bearing for each pedal and 4 bearing for center joints. I have also updated my mechanical for actual rudder axis. Due to bearings my pedals are perfectly precise, butter smooth and I am a chopper driver :)