Gary: If you believe the buzz is wood to wood...check the soundboard under the piano pressing up on the soundboard with maybe the rubber handle of a hammer and use a feeler gauge along each rib checking for unglued ribs. Check the hole in the soundboard for the nosebolt....make sure nothing like old finish or any portion of soundboard touching the nosebolt. Check for microphones attatched to the soundboard. Check the small lid prop...sometimes it will buzz. Sometimes fall boards buzz. You have already checked on top of the soundboard. The answer to your question about the "stobb" under the piano is not acceptable repair practice. I removed two "stobbs" a few weeks ago placed there by a flustrated technician. The problem was the nose bolt hole I described above. The soundboard touched the nose bolt slightly causing the problem. Good luck. Tommy Black Decatur, Alabama
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