Steering Slack

Start with the steeing gear coupler (make sure there isn't play in it) and then go to the steering box adjuster and follow from there as above.

The box has been adjusted all it can be but there is still a lot of play in it.

Are there bushings inside the steering box that can be replaced to get rid of the play? I want to know if that is posible before I sepnd money on it, as that is what I am told by the mechanics here.