Steve look at Andy's exploded drawing. Make certain that all the parts are there, I'm fairly certain they are. Next pull the steps out and lie on the ground. Look under the steps and to the side on piece 29 aft and piece 8 forward, I hope that is the right piece numbers hard to see, there is a notch at the end of the slot all the way outboard. The flatbar braces help hold the steps upright so that the fastner piece 14 will catch in the notch. My guess is that piece 14 is riding in the slot and not catching in the notch. This will allow the steps to hang and not be a stable platform when you step on it. There is also a aftermarket prop that a friend of mine makes that fits on the back of the bottom step and against the trailer frame that prevents the steps from moving. When my screw failed on one of my braces it allowed the steps to fall just enough that they wouldn't catch on the notch on one side. Hope this helps.
Keep the shiny side up.
WBCCI # 348
Past Region 3 President
Past President Tidewater Unit 111
Rick Bell in "Silverbell"