RE: steering wheel slack
I would try the track bar first, then draglink that is attached to the pitman arm, have someone move steering wheel slowly while your under front end see if joints move and wheels dont, go slow looking at every ball joint and both ends of the trackbar.
After I replaced everything that was worn I adjusted my steering box, got a total of six turns out of it, using a wrench the fits the nut on the top of gearbox and an allen that fits the adjustment screw in the center of the nut loosen the nut but keep allen immobile, loosen nut so you can get a few good turns out of the allen screw, when nut is loose then turn the allen wrench clockwise to tighten the allen head down, snug it then back off a half of turn. then holding the allen immobile, tighten the nut back down, whole trick is to only let one thing move at once. hope this helps