RE: Super Wasp
I know its supposed to be quick, but the best advice I can give you is to ditch the whole balsa sandwitch idea. They tend to warp (badly), and are hard to cut correctly! Have you ever built a morris plane? (or any other Stick built profile) That's the only way to go! just trace out your rib profile, cut a block for the engine crutch, and stick build the rest! YOu can even run internal pull/pull controls that way. Look around on the sledge build pages, you'll see what I mean.
I build a wasp the old way and ended up trashing it. THe fuse was straight to begin with, but warped with time.
Matt