Should be easy enough to check. Will take a second person. Have one person turn the wheel, within the slop, and the other take a look at the pitman arm. Assuming you can see the column all the way into the box (on a '66, you can't, it's covered by an outer column), you should be able to see the pitman arm move. If not, then the slop is in the box and it'll require adjustment or Flaming River to do something about it. I've heard of very sloppy new boxes from Flaming River but they've always been able to correct the situation.