I have an SME V arm and the counterweight is designed to accommodate different numbers of weights for different cartridges. I don't know if the SME 3009 series can do this. The goal is to add enough weight to allow the counterweight to slide as close to the pivot point as possible to reduce the moment of inertia.
How is the modified vertical bearing (knife edge) different on your arm from the standard arm? You may try contacting SME directly to see what is possible and even recommended. I'm curious if any custom machined parts for these SME arms are of equal quality to the original SME parts, or are they made by SME and simply relabeled?
How is the modified vertical bearing (knife edge) different on your arm from the standard arm? You may try contacting SME directly to see what is possible and even recommended. I'm curious if any custom machined parts for these SME arms are of equal quality to the original SME parts, or are they made by SME and simply relabeled?