Hello guys and thanks to Barman,
I made a few improvements or simplifications to the steering mechanism of ingenious Barman. It is so dead simple and yet effective. I would have never beleaved since the first movies of the upcoming 42054 appeared. I'm sure this will be helpful for future mocs.
Attached you can find the LDD-file.
42054 Steering Principle v1.1.lxf.zip
http://img4web.com/view/ZUR3DH