Can you "adjust" the steering box? I have lots of play and I remember doing this on an old dodge I had.... If you can, how do you do it?

 

On top of the box is a female allen head, and a set nut. Have someone start truck and rock wheel back and forth, loosen lock nut, and tighten allen head so slightly, turn wheel lock to lock and make sure it doesn't bind. Do this until you get most of the play out, but make sure you have no binding!!