Thanks for asking, 'unfortunately' the weather was toooo nice to spend the time in the basement with building . But thanks much for the hint. I am going to follow it and take CescoAiel's recommendations into account too. As soon as I have time and the weather is not that nice, I am going to take the build up again.
By the way, is there a complete instruction re. the SW versions working together and its parametrization (Smoothyboard & LaserWeb, ...)?