Bass string buzz

[Cy Shuster]

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List,

I tuned a 5'1" Kawaii recently (GE1A on the plate, but has a duplex =
scale, so perhaps is a GE1AS?), about 5 years old, that has a buzz in F2 =
(a bichord).  Pressing down hard on the strings between the agraffe and =
the tuning pin reduces it almost completely.  The felt under the strings =
in this area seems to be in good condition, as does the entire piano.  =
The agraffe seems solid, and pressing on the bridge pins has no effect =
on the buzz.  The ambient humidity was too low to measure (under 20%).  =
A brief inspection of the soundboard revealed no loose items.

If there's just insufficient pressure from the felt on this waste string =
length, what's the right fix?  To simply lower the tension, and wedge a =
small piece of felt underneath?  Is this perhaps a sign that the entire =
strip of felt should be replaced?

Thanks...

--Cy Shuster--
Rochester, MN
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