So, I use 2*10 trains.
My depot is 12, and the depot hos its own refueling staion, meaning trains do not get sent to a refuling station, because they are automatically refuled at their depot.
My provider stations is set for max 2 trains and no providing untill full trainload +50% (iron plate is no providing untill 60k is available).
My requester stations are set to e.g. -60k iron plate / request threshhold -40k / max 2 trains.
Combinators are conencted to the "light", which is the connected to powerpoles/chests.
Now, from time to time, a train will go and pick up something and the deliver it. But the second it arrives at the requester station, it just plows through it and goes back to depot, carrying a full cargo. Sending the train "manually" with LTN, makes it bounce the station over and over. I have to physically ride the train to the station, and then park it, untill it is unloaded.
So far, it has happened with iron plates and advanced circuits.
Any suggestions to what is causing this, will be appreciated.