Dan,
?
So am I reading this correctly in that the program would intentionally overload the spurs rather than return the cars to staging? This doesn't seem like a good solution. I like it that if there is no available space for a car it will be included in the train but returned to staging. This exercise? began as a way to deal with default Es and Ls. My solution was to block E and L from all spurs on the layout but Pete suggested it might be possible to block them from ever leaving an originating track. Blocking E and L on all spurs works well but it is a bit cumbersome initially.
?
Charlie - Northern Colorado