Does such a thing exist? I've got as body manual, and there's a section about KL lenses, but nothing on the "C" series. I've got a 180C that's pretty beat (got a nice replacement, too), and I'd like to disassemble it, but don't know where to start. I can unscrew the metal "cone" that surrounds the front elements, but that's all. The shape of the cone doesn't allow any removal.