Ed, I would install tri-chord felt in the tenor up to G#4. The 1 3/4 length dampers may work depending how large an upright it is. But I would consider making dampers probably 2" or 2 1/4" with three 3 instead of 2. Definitely 2 1/4". 3 felt dampers in the bass. In figuring the length, make sure when the damper lifts it clears the wire of a few notes higher. Pianoforte Piano Supply in Vancouver, BC has them if you don't want to make them. I made a set for a Baldwin Hamilton thus past summer, it made all the difference. Regards, Jon Page, piano technician Harwich Port, Cape Cod, Mass. mailto:jonpage@comcast.net ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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