I plan to complete the track laying on each section of my layout before starting the scenery. I'll test the track with gauges and a truck while laying, but after that I would think there will still be a second class of issues that will only surface with a locomotive. Trouble is, without scenery, it's a long drop to the floor. So I planned on picking up something cheap and cheerful for that part. Only there doesn't seem to be any such thing in HOn3.... Any ideas? Cheers, Jeff.