I service a 1992 Baldwin 6'3" model L. There is a very stubborn pinging or sizzling sound in several keys in the tenor right next to the tenor treble break that I cannot seem to get rid of. I've tried the usual things like pulling up on the strings with a string hook, leveling the strings, mating the hammers to the strings, seating the strings at the bridges, needling the hammers. Nothing has helped. This piano has the Baldwin Accu-just hitch pin. The downbearing seems excessive to me. Any ideas?
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