Hi Bill,
Just went through the same transition with my new stunt ship, was lucky enough to have another modeler, Zuriel, send me a base that I slightly modified. Will see if I can't get a picture and post it.
Got it, the uprights are PVC pipe, cable that holds them back is something I had, drilled a small hole in the PVC, fished the cable through and soldered a washer on the ends to secure it. End that is captured by the Brodak release is a simple loop with a ferrel. Hinges are from the hardware store bent around the PVC and secured with sheet metal screws. The bottom half of the PVC are plugged with a wood dowel for added strength and additional meat for the screws.