Can anyone help me to find a new diverter stem for this shower faucet? Picture is below. It is a three-handle faucet, in chrome. However, it does not have any logo on the faucet.

Or if you have info on how to fix this one, that would help too. When you turn the diverter handle, the shower will come on but water will still flow from the tub spigot.

Thanks,
PJB

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