Thanks for the informative answers
FWIW, my question was spawned from my experience with an upgrade from an MMF-7 to a Scoutmaster. I had a Goldring Elite cart which had performed very good on the 7. However when I put it on the SM, I was very disappointed. My upgrade was not an upgrade. Though it had a lot more weight and authority, the tonal qualities were quite bad. I finally came to the conclusion that there was an incompatibility. Changing to a Dyna 20xl made a big difference. The Benz is much better still. But I never knew whether it was an arm or table incompatibility
FWIW, my question was spawned from my experience with an upgrade from an MMF-7 to a Scoutmaster. I had a Goldring Elite cart which had performed very good on the 7. However when I put it on the SM, I was very disappointed. My upgrade was not an upgrade. Though it had a lot more weight and authority, the tonal qualities were quite bad. I finally came to the conclusion that there was an incompatibility. Changing to a Dyna 20xl made a big difference. The Benz is much better still. But I never knew whether it was an arm or table incompatibility