I have to admit, part of the reason I didn't draw in any dihedral is because I feared designing a weak point in the wing. It is easier to join two wings together at 0 degrees than to join them with any dihedral, when using the wing tube. This is a limit of my ingenuity. I could see how to draw up a .40 sized wing with diehedral, and even how to make it removable, but I just couldn't work it out in my mind how to do it at this scale and make it light enough and yet strong enough. That's what I get for taking Psychology classes instead of Engineering.

Edit: By the way, I have drawn up an "I Beam" type construction, I was thinking it might save some weight over the D-Tube type. I have also been browsing the giants section, and found a couple of build threads for the giant Telemaster, and it's suprisingly similar to my design, not by any intention on my part. Major difference is that I am using a wider chord and therefore a slightly lower aspect ratio, but the same span, and very similar other deminsions. And of course, my Profile fuselage and parasol wing rather than a very trainer-esque fuse.