Neat solution on the steering linkage! You are a brave man bending things on such a pricy kit.
Weird that they choose to have the steering done by cables. Even more so with the distance between servo and steering. Maybe, like you say, gets better once moving. But that self centring is indeed a bit of a worry.
Nice progress though! And putting it on top of the Tatra makes me realise it's even bigger than I thought.
This is going to something else once finished!
Stephan.