We have been tearing down the 46 and I assume there was a problem with the steering box as it appears there has been an attempt to remove it. I thought the spline had been striped to the steering arm , but, after cleaning it up it looks fine. How do you tell if there is too much wear/play in the box and what exactly does the adjustment screw do? Thanks All

First time I saw this truck I said "That's the one!"
1954 Canadian-built Chev Short Box