I ran a roll through the Rolleiflex I just bought from Krimar Photo. On the right hand side of the negative, there's a thin black line, maybe a millimeter thick, running down the entire edge. On a few frames there's a black blob that almost reaches the image negative. All other rebates are clear.

This doesn't appear to be an issue ATM but I'm afraid it might become one. I hate to ship the camera back to Krimar for repair. Is there an easy fix to this?