This one is possessed. When I got it, it was filthy and wouldn't run. I cleaned everything and bushed a few holes and got running. The hairspring was a mess, out of round (it is the original, as is the whole movement.) but I got it relatively straightened out. It ran fine out of the case, with a small adjustment on the adjustment arm. As soon as I put it in the case, it would lose time, about an hour a day. Removed it, it runs fine for days. I checked everything for binding, etc... ad nausem. Now, without me touching it, it's losing fifteen minutes in an hour This is out of the case. It is in beat, but watching the pin, I see the balance wheel is spinning so fast, the pin is traveling almost 360 deg each beat. I know that it's spending way too much time with the extra degrees of rotation and that's what's slowing it down. The adjuster has no effect either. Is there any way to slow this thing down? I know if you shorten the spring you can speed up the movement, but it's set right where it's always been as far as length. It's really personal now. This thing probably isn't worth $10 but I can't stand that it's winning.