RE: making something stronger may be causing a structural problem somewhere else
That is very true. I think that skinning behind the rear spar will add much weight where you don't want it. I would like to see someone use a triangle of skin glued over the stringer joints, instead of gussets and see what the effect is. I have always thought that it would be just as strong, if not stronger and sure would be a lot easier to make. "There is a time for building and a time for flying, and the time for building has long since expired." See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC See you in Mt. Vernon - 2004 - KR Gathering