Jim,
Here's one for you! Talk about being a dunce!..I was trying to put the wheels back on the trailer while in the closed position after having them balanced and jacked it up a
little too far...NOT A GOOD IDEA! The jacks collapsed and had to replace one of them. The screw on one of the jacks went through the floor, but was an easy fix. I hate to admit it, but I guess you live & learn!! That had to be one of the more stupid things I have done in my 65 years.
Jerry