Well.... I was right the first time... it does have some sweep... abt 1.5" worth and it does have a little dihedral. I'd not inserted the wings fully to keep from getting them loose when gluing so really couldn't tell exactly what was. They are now glued and show the sweep and dihedral.

That means my CG position needed corrected and running the numbers yields 2 7/16" aft the LE at root. I've taken four cents back off.

The only remaining work is gluing the horizontal stab, which I've decided to do after hand launch trials. It fits rather tight and will stay in place for some initial testing and allow setting the stab incidence to suit. That might get done this PM.