@mr_gray
Adjusting azimuth electrically involves measuring cross talk between the two channels of the cartridge. Typically you use a voltmeter and test record and measure the output of your cartridge with one channel suppressed. Then you do the same for the other channel. The outputs of the two should be as close as possible to each other for best azimuth alignment. This should mean the least crosstalk and the widest channel separation which should translate into the widest sound stage and the least channel imbalance. That is what I try to hear without using measuring tools.
i have seen videos of azimuth alignment using AudioMagik, a bit more complicated than using a Fozometer, but the principle is the same, measuring cross talk. And your Safir has a tool to rotate the arm tube to adjust for azimuth. It may involve a few back and forth rotating the arm tube, or you might just get it perfect on your first try.