Ok. I’ve got a couple that would fit 2”. You can have the black one, It has a 1/4 x ¼ pin. The other one I made to fit my Southbend spindle protector nut.
Ahha,,,, sailors,,,, you just can't trust themlol. The uber precision for the SM"9 spindle is over $400 cdn and I saw it for $140 usd, the spindle tail bearing is about $30. I installed new 6203's when I was having the issues with my 9" and they were cheap and easy.
I just tried scientific test 2.0, there is just about nothing for water movement, no waves, no tsunami and no Jurassic park rings.
I don't have an MT3 center but my MT2 center in an MT3 adapter gets me just under .003. On the spindle I get not even the width of the line on the dial indicator.