Proctor has a kit and the fuse is built of dowells painted grey to look like tubing. I drew plans and built a small one that has wing warp, all flying stab and rudder and tail skid. I made the oleos functional and in lieu of rubber shock cord inside the fuse I used springs which are adjustable by socket head screws. If you take origional ribs and thin them you could probably build 'warpable' wing panels. Make them plug-in for transport. Just use one spar fore and aft and let the wires hold the wing. By looking at the fullscale construction you can duplicate the other stuff using piano wire, sheet brass and tubing. I've enclosed a close up photo of my warping crank. Notice on the crank that where wires connect there are two holes. The lower (closest to pivot point) is for the intermediate span wires and the upper is for the outer span wires. It has to be done this way or the crank will try to pull the mid-span section of the wing more than the outer. If you have any questions about it just e-mail and I will be happy to elaborate.