Been building a factory and trying to manufacture as much as possible in house. There is a slight issue I am noticing what is decreasing the efficiency of the factory and creating bottlenecks. Stations seem to rather wait for products that are manufactured, than taking the ready ones already build that are in the stock pile right next to that station.
My solution for this problem would be simply for the stock pile to have an input and output slot. Same as the manufacture stations. So the station will always get their stuff from the stock pile and will also prevent stuff being ordered through import, instead of using the manufacturer.