<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; ">Hi Aaron,<DIV>I'm with the other =
guys on not enough jack clearance causing the bobbling. But in answer =
to your question about parts, give Schaff a call. I know they aren't =
in the catalogue, BUT, when M&H had one of their clearing houses in =
the 80's, I believe it was Tuners Supply that bought up a bunch of their =
old parts. Now that Schaff owns what's left of that, there just =
could be some laying around somewhere, never know. But unless the =
hammers are just flopping around from side to side, I really don't think =
that's the problem with bobbling.</DIV><DIV><BR =
class="khtml-block-placeholder"></DIV><DIV>Jeff</DIV><DIV><BR><DIV><DIV>=
On Jan 15, 2006, at 12:25 AM, Aaron Bousel wrote:</DIV><BR =
class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> There is =
a Mason & Hamlin upright model 50 (vintage 1975) I service and at =
the last tuning the owner was complaining about bobbling hammers. The =
hammer pinning is very loose. I played around with the note that was =
bothering her the most and through a combination of repinning and =
strengthening the hammer return spring was able to all but eliminate the =
problem. The piano is in good regulation. Here's the issue: The action =
is really poorly made. 1975 was not exactly the golden age for these. In =
repinning the one I did, I could see that the flange bushing cloth was =
poor quality. It would be wonderful to replace the whole action, but =
that's not going to happen. Does anyone know if it's possible to get =
replacement hammer flanges? These flanges are different from the generic =
ones sold by piano supply houses. If that's not possible, I have to go =
with rebushing what's there. Any recommendations on a good source of =
flange bushing cloth? I know M&H are making these again. Anyone know =
if the action design is the same?<BR><BR> thanks,<BR> Aaron<BR><BR> =
<X-SIGSEP><P> <FONT face="Eras Medium ITC"> =
------------------------------------------<BR> Aaron Bousel<BR> =
Registered Piano Technician, Piano Technicians Guild<BR> </FONT><FONT =
face="Eras Medium ITC" color="#0000FF"> <A =
href="mailto:abousel@comcast.net">abousel@comcast.net</A><BR> =
</FONT><FONT face="Eras Medium ITC">(413) 253-3846 (voice & =
fax)</FONT> </P></X-SIGSEP></BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>=