Got too close to a tree limb and it pulled one of the upper stanchions out of the collar that attaches to the roof for the side ladder on my toy hauler. Trying to figure out how the upper portion to which side ladder is mounted attaches to roof. I think the stanchion/tubing attaches to the collar somehow (there is a screw protruding from the stanchion that was pulled loose), and then collar attaches to roof with screws. Can anyone enlighten me?