Thank you, Don, for the compliment. It's great to have your input on this thread. I remember the Timesaver plan also. David's plan does resemble it. I can't wait to see what David's layout looks like when completed.
By the way, it's really cool that you operated with John Allen! He is legendary in the model railroad community.
Here's a link to an article about the Timesaver:
http://www.wymann.info/ShuntingPuzzl...timesaver.html