06-21-2011, 11:31 AM
Before you go too far, run a train over the new grade in both directions with your longest locomotives pulling your longest cars. If you haven't given it enough vertical transition at either the top or bottom, you may have problems with equipment uncoupling. Longer equipment is more prone to problems than shorter equipment. You want to test it thoroughly in both directions before you put in a lot of scenery and then find out that it all needs to be ripped out and redone.