@audiotroy
I would disagree that azimuth is only important on expensive cartridges.
Once I had to put back my DL-103 (on the ART9XA one channel broke after about 10 hours, and on previous Quintet Black cantilever broke) I finally decided to set up azimuth.
I checked the DL-103 and the stylus was at a small degree to the surface. In fact I checked my all previous cartridges and all had stylus at an angle.
So I put a shim under one side of DL-103. As usual I set up my cartridge with oscilloscope. But this time I actually adjusted the azimuth to minimize cross-talk on the worst channel.
After that, not only channel balance improved, but also tracking ability. While when I had this cartridge before it could not track past 70um on my Ortofon Test LP. This time after azimuth adjustment it only ever slightly distorts when tracking 100um.
It is a mechanical system, which means all moving parts are important. If stylus is not perpendicular to the surface, one side will have more wear than the other and also it might increase record wear.
Cartridges are not ideal, but it does not mean that we can't make them perform their best, even if they are not expensive one. For the same reason I don't align the cartridge sides, but rather cantilever, because it may be at an angle to the cartridge body.
I plan to get more expensive one, but now I realized that I want to have an ability to make an optimal setup. Of course I can use shim as in DL-103, but it does not sound right to me.