I have found Affleck Piano Supply and Tuning to be a good source of
some parts for player rebuild.  They appear to carry a good line of
high quality materials.  I was particularly pleased with their
thin-walled tubing.  They also supply cloth-wrapped hose which seems to
be quite good as well.  They are a supplier that deals primarily with
Internet sales.  Not sure if what they stock will meet the needs of the
group, but its another option for some materials.  Their web site is

  http://www.mypianoshop.com/store/home.php

You can find player piano supplies under "Piano Supplies" from their
home page.

Regards,
Alan Turner