Normal
Climb the chain and tell them you will go to ford corporate unless they want to themselves. Its a known issue and while its past the 3/36k its a known defective part per the SSM and I would argue that it needs to be replaced so that you are driving the truck you paid for. Being out of warranty hurts the situation but I don't think its a dead end. Ask the dealer how they want to handle it. Either you go above their heads or you let them contact ford corporate on your behalf.