Hello, I need help figuring out the position of one of the prisms in Kodak Medalist II rangefinder. I just bought this camera in good shape visually but totally non-functional. Rangefinder window was dark. I opened rangefinder and realized that one of the prisms was loose inside rangefinder housing. I found the photo suggesting the location of the prism in question, but I cannot be sure 100% how it is supposed to be positioned and affixed. Can someone shed the light please? thank you!