I own one of those universal hitches that has three different size balls on it. This way I can pull several different trailers I own, that have different coupler sizes. Well one morning, I had some of my employees hook up our 2 and 5/16 inch coupler trailer to my truck, but they left the ball at 2 inch.
I came out and did my cursory glance over before leaving. When we hit the railroad tracks about 300 yards from the shop................the trailer came off, but the chains did hold it, for me to get stopped. It messed up my bumper and the tongue of the trailer some as it slid under my bumper, during one of the jerks as I was stopping. It also bent the trailer jack pretty bad as it dropped low enough to hit the road.
I replaced the jack, but still have the dings in my bumper to remind me to hook up the trailers myself.
2011 Flagstaff 831 RLBSS
I've just ordered a chicken and an egg from Amazon.... I will keep you posted.