It's a Ford. Enough said. Damned things never steer tight.
Turn off your truck and have someone turn the wheel back and forth. Where is the play? Is it in the gearbox? Do an adjustment on the gearbox, Google that **** how to do it. Find the play. These damned things are meant to keep you alert and off of your cell phone. Mine makes me clench my ******* from time to time. But if you have someone play with the steering wheel while you watch where it is not responding you can begin to track down the loose ends.