I used one of the Computers at the Library to view the Videos on the loose Ball Joints.

Those particular Ball Joints were exceptionally Bad and easy to see but the methods are still valid.

As I said one of the ways to check the Ball Joints in the Manual essentially had to do with attaching a rod to the Ball Joint Shaft itself and flexing the joint to see if there is resistance to the flexing or not.
The above flex test I believe would find a loose joint long before it gets to the state that the ones in the Video show.

Unfotunately to do that test the Joint shaft has to be pressed out to do it.

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