Hello Wehner,
I'm sure I'm adding to the problem but...
You will probably get this thread moved over to the 'Troubleshooting" tab by the moderator, which is appropriate considering this is a serial number lookup thread. I had the same thing happen to my thread restoring a 86 Spoiler.
Moderator doing the gig!
Lots of help here for your adventure restoring this bass back to glory. The good news is they are built really well, and the abuse given can be mostly rectified with some time, work, and patience.
Sounds like you're on a great path, Mica will be able to help for sure, the Alembic folks just have a ton of requests!
The beautiful quilted maple top mod is a tough one. Not sure how that would be addressed?
EoH may have some clever tricks to share? Hes got some mad luthier skills!
Just a suggestion, but if you end up going down the road of new bass pre and others, you may want to redo pickups as well. Good as they may be, the Barts are not Alembic pickups.
Good luck, and keep up the good work!