If you can move the idler arm(attached to k frame) up and down you may have not put in the large washers that go on top and under the arms bushing in some replacement parts. They need to be in on some supplied parts. If the arm can move up and down the tow-in go's away.
If it is the pittman arm (attached to steering box), the looseness will be in the joint attached to the drag link.
Dave