...and it came to me in church on Sunday. Needless to say my mind was not where it should have been. I did figure out a rough track plan for the rest of the layout and I believe I can do two levels without a helix. There will be two giant staging yards, with at least 8 tracks each, plus return loops, stacked on top of each other. There should be 7 towns total on the two levels, with the main yard near the middle of the run. I am working out the details in auto cad on the computer.