I replace a balance staff on a Hamilton 992B. This was easy compared to the Illinois I did last year because it has a friction fit balance staff. Push out the old one and push in the new one. Very easy. There are a couple of mistakes in this video but since it took so long for youtube to tell me why it would not upload I forgot the mistakes. I have been trying since March 18, 2013 to upload this video. A couple of days ago they finally told me to try again because the video was the problem. Better late than never I guess.
This video performed by an amateur. Do not attempt at home. No watches were harmed in the making of this video. For entertainment only.