Ok, been spending lots of time and brain power to build the wheel well. It's hard to finally make a hole in the skin panel. But here's what i did after much loss of sleep. I took a 4 inch PVC pipe. I soaked the balsa wood in warm water for a half hour then wrapped it around the pipe, rubber banded it, and let it dry. Once dry i removed the wood. wrapped wax paper around the pipe and then rubber banded the wood back onto the pipe. Then i glued the seams with thin CA. when dry this gave me the round wheel well. (again this was after lots of experiments with many sizes first).

I figured the wheel well was on a 20 degree angle, that put it close to the angle of the wheel strut. I cut the PVC pipe at an angle so i could use it to create the ellipse on the wing panel. Then i enlarged the hole to match the elliptical line. Then with lots of test fitting and adjustments to the wing hole and rib i was able to get the balsa tube into the wing at the angle i wanted. You can see this in the pictures. Once in i glued it in place and cut off the excess. I used the cut offs as reinforcement to the wheel well. Then i sanded both sides to match the wing contour.

I need to now build the enclosure for the strut.