I think Jeff was wise to re-design the wing to use a conventional leading edge. I was just reading the 1/63 MAN article where Kazmirski explains how he bent wet balsa around a 3/4" dowel to form the LE on the original. Not necessarilly any harder to do, but probably not as strong and resilient as a solid LE. The advantage - as he pointed out - was a uniform radius from root to tip without any shaping or sanding.