I agree, but there's only an indirect way to set those controls. The devs are hijacking some of the other button mappings for the crane. I don't remember the exact mappings but I know you can change the crane controls by changing keyboard mappings such as the diff lock, 4wd drive and other functions. It takes some trial & error to figure out what controls what on the crane. If you have another device like a steering wheel to control the vehicle, then this approach works well. If you use the keyboard for everything, then it can be a mess.