I found an upgrade to my STD 305M table and SME lll arm setup. I have
also been learning some things.
While my SME has two holes between the cartridge mounting holes, there
is also a modified one hole head shell that SME offered. There is a
difference from my understanding, yet SME offers only one protractor.
I just found out that the Stevenson protractor with 2 null points at 60mm
and 117mm, from Vinyl Engine, out performed the SME protractor with a
single null point. Either it is just too difficult to set the arm
properly with a single null point, or the SME is different than the
Stevenson model.