Here's an update,
I got the center weight already and it is indeed more convenient to use than my old stainless/delrin clamp. I have to adjust the frequency of my SDS because the center weight is heavier. Initialy it gave me a dry uninvolving sound then I adjusted the VTA of my Stogi Ref and there is remarkable improvement in the sonics department . The center weight complements the performance of the periphery ring.