Thanks for the pic's Paul!

I might give these a shot. [Link: accuride.com]. They also have a have a bracket kit that will allow me to mount the rack easier. The issue will be attaching the slides to the rack and the kit will help.

I'm going to keep digging to see if there is something with a higher load rating but I feel comfortable with trying these. (I have found some telescopic slides on Chamberlin that would fit the bill but their website is one of the worst I've ever visited! [Link: chambrelan.us] )