1971 Dart Swinger Steering Gear Adjustment needed.

I probably should have described this differently the car does goes straight with no problem and does not pull to the right or left. Also when I had it aligned they told me the remaining play in the steering wheel was coming from the steering box. The P O had the Box off the car but I don’t know to what degree of service was performed on it. Most of the under car steering parts have been replaced with MOOG parts. It’s just that little bit of free play in the wheel that is unnerving. That video upload from Trailbeast looks promising I think I will give that a shot next after the sun goes down a bit it's 90 degrees in the shade today.