Do Storage Yards take priority over Granaries?
Nixon of Impressions says: “Yes, Storage Yards take priority over Granaries. This was done to help you when you needed to stockpile food for a request. So if you allow a Storage Yard to accept food then your cart pushers will want to bring food to the Storage Yard until there is no more room. Basically, you should just set the Storage Yard to fill up to 1/4 (or 1/2 or 3/4), however much room is needed to store your extra food.