First time poster here, looking for some advice on an Olympus OM-1 I recently acquired. I am not well versed in these cameras, and hoping someone more familiar with them might be able to comment. I was inspecting this new-to-me camera and removed the lens. When looking inside I noticed what looked to me like possible damage to the internals of the camera. The plastic piece under the mirror (highlighted by red arrows in photos) appears to be pushed down when I assume it should be flush... Is this anything to worry about? Thanks for any help you can provide.