Originally Posted by fudge_brownie
I was told several years ago that any looseness between stinger and receiver should be dampened or eliminated. Is that the case?
If it is just a little fore-and-aft shifting (and not enough to damage anything), it seems like just an annoyance rather than a safety or reliability concern to me.
If something is being hammered out of shape - such as the pin hole in the receiver - then I would want to fix that.
If it's vertical slop, so there is some movement when load comes entirely off of the ball over bumps, then I would want to fix the loading and stability of the trailer so this doesn't happen even if the connection is a bit sloppy.
A potential problem is sloppiness side-to-side, because that can contribute to sway.
So, I don't think there is a single tidy answer.