@drbond : No, with all respect to you in any audio subject no one has completee knowledge because it's imposible to have that when each day we ( at least me. ) in many ways are learning
I know what I posted and maybe something to add in this tonearm subject is that in audio but specially in analog we are " full " of trade-offs where each one of us room/system quality performance levels depends mainly which trade-offs we already choosed.
R.