Jeff, I cannot resist a good damper mystery. Sounds like board movement is the cause of the intermittent buzz on that damper lever. I'd carefully observe the bottom of the levers, and remove enough material from the wood of the offending lever to clear the string when lifted. I know it doesn't resolve the issue of why that one is the only one doing it, but it probably would make the buzz go away most efficiently. Cheers, Mary
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