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Hi Jonathan: I don't know if you'll find it here or not, but if you remove the baseplate you'll find a fairly large, L-shaped lever just next to the tripod socked opposite the battery box. At the rear of this lever is a gear with a pin on it, and at the front is a spring-loaded arm. The closing shutter curtain rotates the gear, at the end of its travel the pin on the gear strikes the bent end of the lever, and this makes the front end of the lever slide out of the way of the spring-loaded arm and allows it to travel rarward. Friction at this last point can hang the system up. Apply some white lithium grease or equivalent to the front end of the L-shaped lever and also make sure that the mating surfaces in this location are nice and smooth. This will reduce the amount of force that the closing curtain has to exert on the gear to trip the mirror return. |