Post your work in progress as well.

Pic related is a donor body I bought for 20€ to swap out the focus glass on my father's camera.

The gaskets all need replacement and the mirror gets stuck once you shoot and I need to free the mechanism manually at the bottom to push it down.
It is otherwise in very good conditions, so I'm thinking about buying a third donor to fix this one as well since they're very cheap.

Does anyone have knowledge to direct me to the part of the mechanism related to the mirror action? I can unlock it from the bottom,
but the gears responsible for the release are behind the exposure timing and the roll advancer and at the moment I'm stuck because I can't get the screws in the red circle to come out.