Back to Anti-sway.
Here's how the instructions told me to do mine.
As others have said, the attaching (lag) bolts are extremely soft and will pull out under very little stress. I ended up tapping the holes and used grade 8 bolts.
As for tightness of the anti-sway...I grind mine very tight. And I did have a failure after forgetting to unload it while backing up. The socket on the trailer end of the bar was destroyed but all other hardware was easily reusable.
Sorry for the inverted pic.