2 Rail O Scale
Neville,
Can't help you with a forum name, but....
Get on "You Tube" and do a search for O Scale 2 rail and you will get stuff like:
https://www.youtube.com/watch?v=HAjrZ_t6w28
https://www.youtube.com/watch?v=WOTT4et0wFw
https://www.youtube.com/watch?v=-1BKGncHvWU
https://www.youtube.com/watch?v=i-7d1laEEz4
If you search Chi-Town Union Station on the "You Tube" search you will get a bunch of videos of a huge layout in Michigan
Simon