Sometimes I wonder if the reason some tonearms are more sensitive than others in azimuth and VTA adjustment is because the arrangement of the vertical bearings. Arms without offset angled at the bearing will have a greater effect when changing VTA will result in changing azimuth, vise-versa. Arms like Rega, SME V, etc.. have bearings angled approximately 23 degrees to match the headshell angle are, I believe, less sensitive to VTA and azimuth settings. Arms like Clearaudio Satisfy, Origin Live, etc.. that have no offset angle at the bearing are probably more sensitive to azimuth and VTA settings. The only true unipivot arm that has this offset angle is the pre-Phantom Graham models.
Just a hunch.
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