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Great this - messed around fitting the other movement yesterday as I couldn't test it correctly since it had a loose hand. Go for it I figured! Runs for two hours less than the one it replaced! -
Looks like it could be a lack of end-shake. How much end-shake is there ? Also, the coils are slightly bunched under the stud side, but that's not the cause of the problem. -
Yes epoxy and heat is rather interesting. Sometimes what I machining parts I will epoxy because it has really nice holding power and then I will put the thing in a pot of boiling water wagon just tap off the object nice and clean. Also if you want to take out watch crystals and up epoxy Danube oil level in water and I'll just pop out. But it does seem odd that manufacturers would use Epoque see and have a heating system so they may be using a higher temperature E epoxy or something else I had a small ultrasonic machine that I used for cleaning watch parts that actually came with a glass beaker and recommended putting it in the tank With water between the tank in the beaker. This would of course cause in discussion groups of people telling me how stupid I am because you must never do this even though it's the way it came. Then the cheap little ultrasonic ran about 20 years of occasionally cleaning watches and worked perfect until it finally died. But I've also seen larger ultrasonic machines were people put metal clock plates or other large metal objects and shattered their transducers. So yes it usually is recommended not to have things directly on top of the transducer. One theory I heard was if it's solid enough feel reflect back into the transducer which really bad I do not know if that's true or not I do know they look really bad when the shattered. I was trying to find another picture of the bigger machine that I was using when the little one disintegrated. But I did find a picture the little one purchased from the drugstore when they're on sale or there were just really cheap. In other words newfangled ultrasonic cleaning machine with beaker worked really well. Even if I did get schooled in the discussion groups  Okay that your machine somebody didn't want it and gave it to me. So it to prevent the beaker from sitting on the very bottom not that it hurt the little machine as far as I get tell I have a piece of plastic with square holes in it and it fits in the tank units up about hard to tell the picture but at least half an inch maybe an inch than the beaker can sit on that and not be on top of the transducer.   -
I did say  late 1800's into the 1900's. Yes that fits nicely.  -
It looks like a problem with the top pivot. I can't see anything wrong wth the hairspring. Is the chaton sitting correctly? Check the pivot and jewels for dirt and damage. It could also be an end-shake problem, so I am surprised that shimming doesn't help.
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