RE: Need tips for fixing a GP 40 Corsair
When I built mine, the wood I got for the center main spar was really badly warped. It was so bad that I called GP and had them replace it. Maybe the builder just used warped wood. Anyways, I'm not sure there is an easy fix for this. The center section spar sticks out about an inch into the outer wing panels so that is something to considure. Do you have pictures to show how bad the warp is?
Rob