Originally Posted By: eljefino
Funny story (sad) back in 2007 I had an F150 with 5K lb bumper and a dinky little 2K ball in it. For whatever reason, I removed the ball, and found its 3/4" shank in a 1" hole. I put a proper sized ball in, WHICH WAS CHEAPER and more common, before towing with that.
Last spring, I get another F150, and another bonehead did the exact same thing!
They must think that the ball won't slip around in the hole, if they torque the nut super-duper tight.
Yes, if you just tighten things more, they won't move! Problem solved.