I am working on a Seiko 7019 and it had a broken balance staff. I had some spare parts from other 7019s as I tend to use them for practice/experimentation so I decided I would try swapping the balance wheel out. I think it went okay but I believe I may have tweaked the hairspring slightly during the process. My symptoms are: amplitude 250° horizontal and approx -15° vertical beat error 0.5ms rate 600+ seconds per day I have tried cleaning the hairspring carefully an