What has Happened to my 300MC

Long time since I’ve been on here, but a change of career means that it’ll be a long time before I’m buying anymore watches.

To the point, I recently had to put my 300MC in for repair. I used the hour jump after not wearing for a couple of days and it got stuck between hours, when minute hand was at 12. Anyway, below is a list of parts that were replaced, and this is only 3 years since an Omega service. Watch has never been dropped or knocked and the boutique and service dept (in another city) both made a point of saying it was in fantastic condition (on the outside). Anyone (obviously smarter than me), able to work out what has gone wrong from the below list of parts replaced? I’m trying to get my head around how a watch that is babied, ends up requiring what seems to me, like a lot of parts.



Thanks.

Thanks for taking the time to reply, OB was extra cagey when asked.