Thanks Haggis!
I worked on the bed project again and finally bolted the rails to the side supports and mounted the rollers to the platform. After all said and done, I'm very pleased with the results. now build the shorter of the 2 platforms, a way to lock the platforms in place, figure out a way to easily pull the platform from the tailgate without having to climb in and them the covers/doors for the side storage. I'm still deciding if I want to cut down the excess part of the rollers. here are some pics. let me know what you think.
Side view with flatside up
View from the rear, flatside up
Framside up
Frameside up pulled out to the 2nd to the last set of rollers.