If you have too much axial play, you didn't put the adjusting plug far enough into the box. You may also have to thread the cam follower another 1/4 to 1/2 turn or so into the box. If you didn't replace that, you'll need to make sure that it winds up 90 degrees from its old orientation, or any wear in it turns into slop in the steering box.
If it isn't in the box, the front axle may be wobbling in the frame.
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