I recently set up azimuth on a new cartridge with a VTA/Azimuth block - output was unbalanced. Then used a Fozgometer and got equal output but no magic. Then an o-scope and found 75/150 mv crosstalk. Adjusted it to 65/80 mv. Slightly unbalanced output but Glorious sound. Lesson? Measure the right thing and azimuth matters a lot.