To be honest, do you really need to know everything about your camera? I know a photographer/artist who doesn't know how all the basics, but who takes great photos, better than that of most pixel peepers. You can do great compositions without knowing how to manually expose a photo.
Saw a white K-r (I believe) recently, I think it was in Berlin or Cologne. But that was it AFAIK.
Fixed my *istDs with superglue, and the rubbery thing around the viewfinder is gone. Oh well, guess that's a well worn camera, and I won't give it up.
Seems like the AF is going bad though, even in daylight it has problems getting a fix, can't remember that behavior in the past.