Originally Posted by fordtruggy

More than likely the play is in the steering linkage.If not then its the box and will have to be replaced to fix the problem.The screw adjustment is for the fluid flow, The more you turn it out the more fluid flows and the steering gets easier.As you turn it in the flow gets restricted and the steering gets harder.It makes a little difference either way but wont help steering play.I always adjust mine when I get a new ford or box just for comfort.