I have a 2 year old D that has a ringing damper problem that is trying my patience! When F-5 is played, after releasing there is a harmonic given off by F-2 which is the first note on the treble bridge. I've changed the felt, to no avail. If I lightly touch any ONE of the 3 strings on either side of the damper the problem stops. I've tried yarn in the tri-chord felt, tipping the damper fore and aft, and side to side. I'm stumped! Any advice? I'm rarely unable to make these disappear, but I've tried all my tricks. What's a guy to do? John Minor University of Illinois
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