RE: Warped Aileron - 3dhs Edge 41
I find it helpful when doing this to twist the part more than it needs to correct the warp. Then while holding the twist, use the iron or heat gun to re-shrink the covering. The excess twist will take care of the "set" the wood has taken. After a while the wood will relax (a week or two) and the twist may appear in the opposite direction. I've only had this happen once.
It might take a couple of tries but I've never had this fail on a monokoted wing.