Dave
Thanks. Yes, I have done a lot more since Terry produced that outstanding video. (https://www.youtube.com/watch?v=HAjrZ_t6w28) The porton of the layout shown in that photo is complete. I am now working on the four track main through Princeton Junction. I am a bit surprised how much background work (defined as behind the catenary) I still have to do. But I am getting there. Here are two examples:
PRRronbh:
2 rail O scale. And good luck with your diagnostic.