Here's a clock repair group that should be of help:

  http://www.nawcc.org/ 
  http://mb.nawcc.org/forumdisplay.php?22-Clock-Repair 

It's the message board of the National Association of Watch and
Clock Collectors, but you don't have to be a member of NAWCC to
ask questions or have them answered.  Really skilled clock people
read it daily.  I do, too.

Mark Kinsler
Lancaster, Ohio, USA