Originally posted by longbow There's 3 adjustment screws for the focusing the screen that are easily accessed from inside the mirror box. These should always be left alone, as they are factory adjusted, but it's possible someone turned them not knowing what they were for.
---------- Post added 11-26-18 at 11:55 AM ----------
It's accessed like the other K and Spotmatic models, removing the top cover and prism frame. It takes a bit of time and patience.
I was looking at my K2 and noticed those screws as well, nice to know what they are for (and to not touch them).