I have a kegerator Haier model. Have my second commercial key, MGD installed. It has been installed for only 3 weeks and it tastes metallic (specifically the foam tastes like metal or tin) and somewhat stale. It has been under constant cooling, not sure the temperature but it is a little above the normal setting on the kegerator. Any thoughts on length for this keg? Thoughts on why the taste is so?
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