Hello guys  I just  serviced an older 2783 which I was going to use in one of the explorer cases and it has been running really well for q good 24 hours!  Also very accurate.     I noticed that when I shake it to wind the automatic, the movement stops after a couple of hours!  I then opened it up to see what the issue was and noticed that balance wheel did not oscillate!  I remove the balance bridge to reset it and presto it fired  back upto the way it was running!     At firs