Kelly,

Here are the pictures of the wing root, i know they don't tell you much without a proper reference point. But if you want i can trace the outline of the root airfoil on some paper, scan and send it to you. If you need any more measurements just let me know.









@Carlos; I'm not using any extra screws on the fins, they are just wedged between the fuse and wings. Maybe the flutter just becomes an issue once you add rudders? Or maybe i'm still too slow to have problems with it.
Regarding rudder servo's, you might want to look into the MKS DS6125 servo, full alluminum servo case with titanium gear train, absolutely zero slop and almost double the torque of similar servo's.

Regards, Bart.