[mtlakejim]

Originally Posted by Daryles

I just fixed mine again (2nd time in a month). As
DebNJim B pointed out the bolt wears out the nylon thread in the roller. I tightened up the bolt where it actually threaded through the metal roller threads, then put it back up in the track. Then lubricated all moving parts, pivot, hinges top and bottom. Runs smoothly now.
I think DebNJim B fix is a better way to go.
Looks like the new one is nylon???
Not sure how long that will last.

You know that looks a lot like a smaller and lighter duty version of a Unistrut trolley. I am using Unistrut and 4 trollies to make a bed lift in our cargo trailer. The Unistrut is industrial strong and often used for heavy duty applications. I bet you could make a really stout setup out of that. It would certainly work if you wanted to build a barn door setup!