This clock came in from a shop for repair, and the owner died. The customer picked it up and brought it to me. It was fully wound, and all I did was start it and adjust the beat slightly. It ran strong and healthy for about a day and a half. Then it suddenly stopped as if it had no power. I let the spring down a few turns and it started right up again. Ran for a few hours and stopped again. So... I figure the mainspring is sticking. (Strike side works fine.) I proceeded to tear it down, clean and inspect. Didn't find anything unusual or worn badly. Thoroughly cleaned both mainsprings, even though the clock was not very dirty at all, including the springs. Put it back together, oiled it and it's performance is the same as before. I did hear a small "pop" once when I tried to start it, and it did (start). It does have three Rathbun bushings..but they appear to be installed properly, as Rathbun bushings go. But one thing I notice about them is that the pivots extend to the outer edge, as if someone might have installed some longer pivots. In other words, the pivots protrude through the plate and to the outer edge of the bushing. Not sure any of that makes a difference, but just an observation.