Just to let everyone know since my first post was down voted to oblivion. The black smith is worthless. Do not put any coins into it aside from achievements it will hurt your growth. You get more attack but at the cost of more resources and the cost growth exceeds the attack growth (for most of them, steel or iron is 1/1 being the only exception I've found) making every upgrade hurt your growth more.
Ha, I bought the game only to realize if I preordered the sequel I could get the full version here for free. Just so you guys know it's 50 kreds right now for this full game and the preorder for the sequel is $15.
In the slot-specific auto-sell/refine, you may have helmets unselected.