fourwinds, Just to clarify, azimuth is NOT about channel balance. It is about crosstalk, the degree to which L channel information leaks into the R channel, and vice-versa. This phenomenon has a lot to do with the illusion of stage width that the system can convey. I've never owned nor played with the Foz, but it does seem that many end users use it incorrectly (either that or many units are faulty) so as to end up with inaccurate azimuth adjustment and therefore poor crosstalk characteristics, which leads to a narrow sound stage. I have read, for one thing, that the battery in the Foz needs to be kept fresh at all times, for accurate readings. But if the Foz is telling you that your azimuth has to be tilted way off of top dead center (top surface of cartridge or headshell at a 90 degree angle to the LP surface), then I suspect it's readout is not trustworthy.
Just for fun, you might try setting your azimuth to 90 degrees empirically (see above), ignoring the Foz. Then have a listen.
By the way, radical changes in azimuth have little effect on channel balance and adjusting azimuth is not the way to "fix" channel imbalance.