I've had good results from OL Illustrious with Shelter 90X and now 9000 cart. Perhaps the Shelters with eliptical as opposed to "fine line" tips are more tolerant of small VTA and azimuth errors. I have purchased a "VTAF" device to allow on the fly VTA adjustment, but haven't installed it yet. Azimuth can be adjusted, not easily, by loosening the headshell. I've gotten best results from accurate overhang setting using a Feichert protractor and setting VTF with a digital scale. BTW, the 9000 is much improved over the 90X. So much so, I wonder if my 90X was defective.