RE: Hostetler Extra 300XS 27%, 33% or 40%
Well I got my answer from Wendell himself. The mount is boxed in, the F8 former gets cut, as does the diagonal brace. The stab is not sheeted, only through the fuse. I'll have to see how this turns out though, as I still think it'll look better fully sheeted (smooth vs stab ribs sticking up in covering). 1/16" sheeting wouldn't add much weight and I could even it up a little by lightening the ribs in the stab.
For those interested, I asked about the Edge 540 plans. Turns out it's a two piece - TUBE mount wing. That'll be my next build!
MPB