Well I think I figured out how to attach the legs to body. This set up isn't completely set, but it was stable enough to make a display appearance for Halloween at work and then at church for our youth event. Artoo was a big hit!!! I can't wait to get him rolling around for next year!!
Attached are some pics. I attached the legs using the parts included with the A&A frame. There are 4 hubs, two per leg. I have them attached, one to the leg, and then one inside the JAG stop on the shoulder of the frame. This give me about 1/2" from the leg to the body, less the .080" thickness of the skins. I have yet to reinforce the bolts, from both the inside of the leg hub as well as between the inside of the leg and the shoulder hub. I plan on using an additional piece of styrene inside, laminated to beef up the area of the bolts. I plan on doing the same on the opposite side of the leg skin, using metal for added strength.
The builder logo that you see is the cut out from the C&D dome base ring. I think Cole Horton mentioned something about not knowing what to do with this area, but he added the logo there for fun. I'm not sure if anyone had done anything with this yet, but I plan on eventually finishing a frame to fit it and adding a clock movement. The weathering was made to look like scrap metal. I'm pretty happy with the results.