Im having problems with the Graphex shutter in my Optar 135/4.7 lens which came with my Crown Graphic. At first there were several issues (T mode not working, blades closing slowly, slow speeds very slow etc.) so I tried the lighter fluid/Ronsonol soak repair method. The result is that the shutter worked perfectly at all speeds, for about a few hours after the soak. When all the fluid has dried up, the shutter is snappy and accurate until the blades are supposed to close, at which point they often get stuck. Just a drop or two of lighter fluid on the blades and they soon close themselves.
Any idea what might be the issue? Is there anything I can do that doesnt require disassembly (beyond the cover)?
Pro repairs are horribly expensive in Sweden and if there is nothing I can do myself, Ill probably try to buy another lens or shutter.
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