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Ball Engineer Master Ii Aviator Dual Time GM2086C Calibre ETA 2892 A2



Low amplitude with module attached






Very healthy amplitude without module attached means the module is the problem











The wheel is hard to turn on its post which is the cause of the low amplitude and the watch loosing time


Post refitted into the plate

A smoothing broach was used to clean the rust from the inside of the wheel





































The post had to be pushed out of the plate and the wheel to release it. It was rusty which is why the wheel was struggling to turn.