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|Each Premium Clock Insert
Install a FRESH Duracell or Energizer Battery (But not a rechargeable type). In our experience, these are the only batteries that are reliable for clock mechanisms. If that doesn't work, also try a battery from a separate pack - this seems to help on many occasions too.
Our soft gasket mounting system allows you some flexibility about the size of the actual mounting hole. You can adapt these new inserts to a 1/8 inch larger hole size by removing the soft rubber gasket, and wrapping the back of the insert with plumbers Teflon tape or electrical tape to “build up” the back of these insert clocks. Then re install the soft rubber gasket to adapt to fit a larger mounting hole.