<html> Bill, I had a similar buzz on a M&H A at the high treble break. I relieved it once by prying slightly on the bridge end against the plate. Yesterday it returned. Even the slightest pressure on the end of the bridge ceased the buzzing (somewhat metallic in nature). I applied CA with a brush to the very end of the bridge and the buzzing stopped. Loose cap? It didn't appear to be but the buzz was not of wood to wood, more of a string buzzing on the plate. Try applying CA with a throw-away artist's brush at the bolt hole and bridge ends if necessary. Injecting CA into the panel intermittently may 'find' the culprit too, if it's a laminate. Happy Hunting,</html>