I put this in the GD section to help get a little more views in the hopes that this great community has some suggestions I can try out. My IWC Regulateur has died. It has a modified A6498 in it. When I wind it, it feels just like normal, and I can feel the tension build up resistance while winding. BUT, the main spring is not releasing tension on the movement. The balance does not spin at all. If I give it a little shake, the balance wheel turns a few times but then just stops.
Any ideas where the problem might be?
Also, how do I release the main spring tension?
Please help!!!!