I was given the task of designing a track plan for my little brothers future N scale layout. I made a simple 2 track oval with a bunch of sidings on the inner loop for industries once the "Operations" bug bites him. It's about 2x7 (going by a rough estamate) the colors at the right on the tracks inside the tunnel Red= Downgrade Light blue= Level track Dark blue= upgrade. I made this track plan by combining two trackplans from a webpage, i think its okay but im a unexperianced track-planner, do any of you vets have any tips for me? Personally im worried that the grade in the tunnel could cause a lot of trouble. edit: By the way the curves are 11'' and 19'' on a few sidings, 11'' should handle his amfleet coaches right?