Ortofon A95

Dear @jw944ts : That's a great performer and the best is to follow the Ortofon advise, you don't need to stay out of Ortofon specs.

You can test different VTF/VTA/SRA parameters but always inside the VTF range Ortofon gives.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

any thoughts about effective tonearm mass?

Start with the compliance of the cartridge at 10Hz and work backward using the formula for resonant frequency that is available on-line.  You cannot assume that you are getting an exact result for your own system, from the formula, but it will certainly put you in the right ballpark for tonearm effective mass.  That would be my advice.