Why do I have such sloppy steering?

I replaced my 43 year old parts and it made a big difference but I still have some slop and a clunk noise in the center of the slop. I am guessing the steering coupler needs rebuilt. I found a kit on e-Bay and will get it installed after the Nationals. I will also adjust the gear as needed. Can you have someone move the steering wheel back and forth while you look at the column and coupler. If the column moves before the coupler does there could be your problem. toolmanmike