I've been using a Sinar Auto-Shutter with DB mounted lenses for the past several months. When using different DB mounted lenses on this shutter I understand that I would trip the shutter release cable in order to preview depth-of-field. However, in the past couple of shooting sessions, I've noted that the shutter isn't closing down very far. It seems to be sticking... the blades close down to resemble a starfish design.

Has anyone out there experienced this same problem? How did you resolve it? Did you have to send it in for repairs?

Thanks in advance for your comments.

Cheers