Update:
Turns out I had been listening to this cartridge slightly ‘tail up’. I took several photos into Photoshop and confirmed it. Dropping the VTA dial to the lowest point (did not know it went that far below zero) on my Technics 1200G was not enough to get the tonearm parallel to the record. Getting a 4.5mm Herbies mat on top of the stock rubber mat got me there.
I had about 20 hours on the cartridge at this point. The VTA change instantly gave the cart a smoother, easier presentation. Then about 8-10 hours later it really opened up. Also turns out that this tonearm position helps to take the edge of of my VM750SH mm cart as well. I’ve always eye-balled VTA against a gridded acrylic plate thinking that this was good enough. Not good enough.
This is a great cart! Next one will be the AT33SA,