Someone asked if the flaps were scale so I took another hard look at them. Dimensionally speaking they are to scale, but we do have a visual problem when viewed from above the wing. Fortunately the fix is pretty simple, not requiring any design change, just a change to the construction manual.

Picture 1 & 2 show a comparison of the flaps when viewed from below the wing. Here they look pretty close to scale.
Picture 3 & 4 show the same when viewed from above. Here is the visual problem.
Picture 4 shows the fix.
Picture 5 & 6 show how it will look after the change. The cardboard represents the extended plywood piece.

Fahim