"..worked correctly the first try. That's not supposed to happen and left me with doubts."

I chuckled at this part, it hit home so hard.
~This can't be right..
~Something MUST be wrong..
~I bet it will break tomorrow..

Nice!

Probably going to use a train limit based on missing content with a circuit clock per station that counts upward increasing priority for that station overtime (say prio 1-100, or 1-100 for low and 50-150 for high prio stations).