Hi, If your car has a split steering shaft, try locking vise grips on the steering shaft coupler. Hold it tight and try turning the steering wheel. If you have any play at all, the nut on the steering wheel might be loose or the splines are worn. I was putting new bushings in the steering column on mine when I found it. The slop I was fighting along was at the steering wheel, not the steering box. Mine is now slop free.
Good luck, Roy
Good luck, Roy