Hi, Glen, Loose hammer head glue joint. Check both ends of the shank Loose back stop glue joint. Check both ends of the shank missing jack felt. Missing butt felt loose butt screw loose wippen screw Overly large balance pin hole Loose key end glue joint Hard rubber grommet Loose damper screw Loose damper head metal insert Hard bridle strap tip If you check all these and it is not one of these you should still be able to determine the cause. Have a nice week. Newton nhunt@jagat.com
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