I'm tearing up my first attempt at a Z scale layout and starting again. No regrets, there were too many things about it that bugged me, need a clean break. One thing I'm thinking about. I had previously used cork underlay. I'm now thinking about skipping it. I had previously done a test ballasting a piece of track without underlay. It looked good. When I started ballasting the layout I found that I needed more ballast in order to cover the underlay and it never looked at good as the test piece. Thinking of laying the track directly on to wood. In places where there are styrofoam risers etc I'll lay a thin layer of plywood. Any comments welcome. Thanks.