I have 4 steel mills that have been producing 36 tons a day. After buying a third city today, I bought some improvements, including a 5th steel mill. However, when I checked my resources my daily steel production actually went down even though I had enough coal and iron to supply manufacturing it them all. I then sold my 5th steel mill, but I'm now only producing 21.6 tons per day instead of the 36 I should and was prior. Also, my coal usage says 24, but it should be 28.8. My iron usage says 7.2, but should be 12. Thank you for your assistance. https://politicsandwar.com/nation/id=14125