Another update:
I had been running the AT33PTGII at 60db gain. I had tried the 66db gain settings when I initially installed the cartridge and I liked it but worried that it might be too much gain.The 60db setting sounded fine so I left it there. Then yesterday I plugged in this formula (NdB = 20 log V1/V2) and found out that I should be using 70db to get the best signal to noise ration. Luckily my Hagerman Trumpet MC has a 68db gain setting also. Well, It does indeed sound better. Much better slam in the bass…but also subtle details showing up too. Cannot believe I have been listening to this cart for so long at suboptimal levels.