Fujica Auto-M Aperture one stop off

I have a Fujica Auto-M range finder camera. Everything works as it should. The only problem I have is the aperture is one stop off. In manual mode, when I set the aperture to F2.8, it actually stops down to F4. Also, F11 and F16 are the same. I hear this is a very complicated camera. Is this something that can be fixed reasonablely easily?

IDK this camera specifically. Cameras like these often feature precise but delicate mechanical linkages that easily get out of alignment over time. I'm sure it's possible to correct it, but it'll take either a good manual and a set of solid nerves + good motor skills, or the latter plus a good dose of mechanical acumen. Reasonably easily - probably not. But cameras like these can generally be figured out with some stud.