So dial down on a 7015 movement all was good and the balance was working nicely. Dial up and the watch stops. Vertically good as well. First thought is balance pivot broken but no all good there. I listen carefully as I flip the watch over and can here something loose that stops the watch. Maybe the the third wheel or the escape wheel have broken pivots but they look good as well. Lots of head scratching and swearing at this point because I have taken this watch apart several times. Carefully look at balance and the ruddy screw that holds the stud in place is loose!!!!!! A quick tighten up and all is good. Its often the simplest solution that gets a job done but I always go for the most complicated!!