Hey guys- I need a little help here. I just got a Russian-made Mir rangefinder, which is a simplified version of the Russian Zorki 4, which is itself a rough copy of the Leica II. Everything seems to work fine (although the shutter was prone to sticking at first; now it's okay) except the rangefinder, which is out of vertical alignment. Obviously, unless my subjects have strong vertical lines for me to use as reference points, I have one hell of a time getting things perfectly focused- especially when I'm stopped all the way open and working with a very shallow DOF. Anybody know how to adjust/fix the vertical alignment on my camera?