I've tried that and I think either my clamping or just the reheating of previously tweaked puts different stresses on it and when you undo it, it moves. I guess I'm going to have to figure a way to hold it without clamping it too hard. This one has siyahs so if gives me a uniform shape to clamp so maybe it won't be too tough. This has been my stumbling block with recurves. I spend more time with a heat gun in my hand then I think I oughta.