There is a world-wide group of real artisans who use and repair old Pfaff machines, even going so far as to engineer parts. Try this link (cut and paste):
https://groups.io/g/OldPfaffPforum
I have a 50-yr-old Pfaff 1222 and two shops said it couldn't be repaired, but it could and was, by someone who actually understood mechanical machines (not computerized ones).