I have ballasted the main line in a grey ballast and the yard in black cinders. I have tested all of the track and everything works fine. In fact I did have one problem. Locos travelling over one of the points into the turntable area seemed to be loosing electrical contact. When I looked at the point closely, it seems that I had omitted to put in the requisite jumper leads to ensure continuity from the switch places to the outer rails. I put in a couple of wire jumpers and now everything works beautifully.
Here is what the track looks like now.
It all looks a bit messy but when I get the ground cover down it will all sort itself out.
I have also gone carefully through the turntable programming. I now have a consistent set of track addresses. On the turntable controller they are 1 through to 5 and on the DCC controller they are 225 through to 231.
I haven't fitted the control cabin or the centre post to the turntable. I have a feeling that I would break something if I did anything there now. I will leave these until the main scenery is down in the yard.
I have ordered a 3lb bag of Sculptamold coming so this will be the basis for the ground.