any idea how much to give me an ideaon the shaft that you wind up,(the one you put the key on) is a notch. On the innermost part of the spring that you want to wind is a hole and groove that the notch fits in. I suspect that overwinding has caused the notch to come out of the hole so it is now slipping. Or the spring could have snapped which is less likely to happen. Either way it's probably a strip down which isn't cheap. Greart