Charles,
I haven't seen too many people tackle the job of rebuilding the FD. But I did see a thread recently where someone did just that so it can be done.
There are several places around that do the rebuild jobs. I believe Brian (RARLYL8) does rebuilds. (
RarlyL8 Motorsports) There may be others around and it sounds like you've got some great local options!
Bosch was the original manufacturer of many CIS components. There may be rebuild kits for sale.
I think the part number you posted is the Bosch number. If you do a Google search for "Bosch -your part number- rebuild", you might find a kit.
Try that and report back on what you turn up.