Vinny, the dovetails are not small ones. 1/2" doves. The back will rotate yes. I always support the inside of the back box with what will become the stops for the bellows. The rear bellows frame will stop and if need be attach to this. Generally I make the rear frame out of solid stock and make it fit tight to the back box. The rear frame is then very rigid. My back box is a more traditional depth. It is 2" deep. Even though I'm designing my camera around the Chamonix/Phillips design I feel the additional depth of the back bx is needed for better strength. I have Deardorff hardware to use and I'm going to move on to the rear back assembly with the ground glass soon. I'll be working on the old T depth question soon. I'll get some more images up soon.