Originally Posted by seabee1999
If the second back also has the same problem that would point to the body. Do you have a friend nearby with the Bronica SQ system you could call on to see if your backs would work on their Bronica body (or vice the versa). One good thing about the Bronis being mainly mechanical and a system camera is that they can normally be fixed or failing that a new back, body or lens sourced in.
Best of luck and let us hear how you get on.
The aim of art is to represent not the outward appearance of things, but their inward significance.