Let there be music!
I decided to quit fiddling with trying to adjust the anti-skating by the Hi Fi News LP, and just took HW's word from the JMW9 Manual that when the tonearm swings toward the edge of the LP when in a neutral balance, that's plenty of anti-skating.
Then I decided to listen to some LPs instead of test tones.
Oh Boy! Whether or not the anti-skating is correct, the music coming from this TT is quite nice....you know all the cliches....each instrument wrapped in its own blanket of air and occupying its own unique space, clean clear sound without tinny brightness (and the DV20X cartridge isn't even broken in yet), details coming out of blackness --brushstrokes on the cymbals, wider and deeper soundstage, etc. etc. etc.
In short, I am very pleased with this upgrade...I'll probably be able to live with if for a few months before upgrading again ;-)
Thanks again to all who offered advice and info. This forum is a great resource.