More specs please. I've built deltas' with the C.G @ 10%-40% Different configurations require different C.G. placement.
Thickest @ the center , but what about the airfoil shape? Do I understand that the thickest part of the airfoil is the L.E.?
Photos?
You can get away with murder with deltas, but a little more precise explanation will help find your answer.
How much reflex do you have in it?