My idea is quite simple, a parking station (10 stations with the same name), iron ore pickup and iron ore input. I'd like all trains to wait at the trainyard until the iron ore pickup has enough iron. That's easy to do with a circuit condition which enables the station when there is enough for a full load. In combination with the train limit, the amount of trains rushing to that station can be limited to 1. Great

My train picks up the ore, drives to the iron ore input, drops it off and goes back to the trainyard.
Here's the problem; the trains keep running around between parking and iron ore input. It skips the disabled trainstation. I rather not create a global circuit network as that is tedious. Is there another solution (preferably modless?)