Originally Posted by Bobbie Mayer
without the boot it isn't stable
... and the tighter the boot, the more stable it becomes. Raising the top should also stretch the canvass.
In my photos, the 3 major pieces are loosely connected to show how they attach to each other. When installed on the trailer the bolts need to be tight enough to hold the 3 pieces very close together, but not so tight as to prevent movement. Without seeing your mechanism I can only speculate that your bolts may not be tight enough. The cut of the stanchion at the 15" mark in the last photo is all there is to hold the stanchions upright against the top mounting angle and the bottom drawer slide. My top does not have the pins/pegs that you mention, but I plan to add them in my rebuild. They only arrest forward or backward movement IF the pieces are close enough together to engage the cut of the stanchion sideways against the top & bottom parts.