Get in touch with 4am (@a2_4am) and DiskBlitz (@diskblitz) on Twitter — although they're doing it on Apple II disks, there's some pretty sophisticated tooling,

Get in touch with 4am (@a2_4am) and DiskBlitz (@diskblitz) on Twitter — although they're doing it on Apple II disks, there's some pretty sophisticated tooling, and it should theoretically be able to read C64 disks too. 4am also has a lot of experience reading old disks using soap and water :-)