Thanks so much for all the responses. I am experimenting with the suggestions. Best results seem to fall in the minimal settings region.
My former arm, a Rega, seemed to do best with the antiskate at about half the recommended force, as some suggested.
My new cartridge is a Lyra Helios. They are adamant that tracking force should stay within a narrow recommended range, as it is a crucial element of the design, so there is not much wiggle room on VTF. Great cartridge, btw.