picked the wharf up tonight and got on with the job I had been avoiding, scribing the planks.
This went better than I had expected and in no time (well about an hour) I had the job done.
I then sanded the edges down, added holes for the point actuation switches to work and then added balsa strips to the edges.
The weights are to try to solve a slight warping problem. when glued to the baseboard it should be fine.