Just how fragile is the 8AE balance?
I am working on an excellent condition Squadron B with a '47 8AE movement.
I could almost say for certain that the balance wheel oscillators well before disassmbly. However, after very carefully removing the dust shield, the upper balance wheel pivot was broken.
When looking for a parts movement, I noticed many 8AE's for sale or bid without a balance wheel.
Are the 8AE's balance wheels that fragile?