I'm fixing this cuckoo and fixed a click spring and that was it. Everything working as far as it's running and not stopping it's cuckoo is going off followed by the music. But all the sudden was watching it hit the hour and the pendulum almost comes to a sudden stop then goes extra fast until cuckoo stops. Doesn't do it during music. Going someone can tell me before I take it apart what I need to look at or fix? Any help appreciated
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