a little tip for ya.

If you have a ball link that is really loose and flopping around, take a tiny (AND I MEAN TINY, like, with a toothpick or something) bit of CA and run it into the ball groove, and immediately push it onto the ball. allow it to sit for a second and then continually move the link until the CA dries. Then, you should have a nice smooth (not floppy) ball link connection.