I use PCM rec but as Sprink says I dont set failsafe. I think Mark will try a diffo rec and see.

Philly if I was going to do a Fun fly wing!!! I would probably start with the same basic centre and take a bass spar out from each side of the fuzz to first servo bay position.

I would then build a box around that fits the fuzz.

Then take the Cougar wing section and cut three ribs with the box shape removed from the middle. If you then moved that box shape down in the next two ribs (say) 1.5mm you would create a little dihedral. Keep the LE straight and make a Hype type tapered ailerons.

A lot like the planform of an Acro wot.

With a bit of luck the position of the cougar spars would allow you to graft them on top of the original section.