I ran across the blog at the link below. I'm not sure I understand or completely agree with all of his arguments on azimuth, but the 3 blog posts on the subject end with their setting azimuth by equal distortion rather than minimum crosstalk. Check Azimuth parts I. II. III. http://korfaudio.com/blog36 The rest of the blog is pretty interesting too, especially if you are like me and like thinking about the various design choices in a tonearm.