[Zoomad75]

Well, I'd check out the ends on the drag link, tie rod and the steering gear itself. Other causes could be sloppy ball joints on the axle or (and this is often overlooked) a cracked frame at the steering gear.

If the frame is cracked there, every time you turn the wheel, not all the movement is going to the tires, some of it is flopping the gear around. Could be only a little or could be a lot. Have some body steer the truck with it parked while you watch for the gear assembly to move or not. If it's cracked you will need to fix them and add in a weld in brace.