Synchro-Compur 0 shutter with disabled aperture (lever lopped off)

I pickup a couple of Syncro-Compur 0 shutters marked Linhof over several years. Both are very accurate and look like they were used for microscope objectives and similar lenses with built in apertures. Both lenses have aperture markings but the part of the rotating aperture scale has been lopped off. You can still rotate the aperture mechanism by pushing the ring from the back. I know it is hard to get parts for these 60/70's shutters and I would like to use them for regular lenses that use the shutter's built in aperture. Other than replacing the aperture ring from a defunct shutter, I don't see any way to solve this issue.