For some reason the little Copal 225 seems prone to having a Noisy motor. My attempted solution in the past has been to try to adjust the whirligig because I figured that it was rubbing on the stationary cage. However, I think that was going at it the wrong way. It may be that the cage was the problem. Just this evening I fixed (hopefully permanently) my current nightstand clock by adjusting the cage. So far so good.
see YouTube video
see YouTube video
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