I too have been following the various opinions of this mod. While most are overwhelmingly favorable, ( some are even huge raves), there appear to be ( as usual) a few naysayers. The naysayers seem to overwhelmingly state that the issue is that the actual speed accuracy falls off...possibly due to slight slippage between the inner disc platter piece and the lower disc piece of the Tranquility. Nonetheless, I have NOT heard this mod...and would surely like to before coming to an absolute conclusion.
The slippage issue does seem plausible...unfortunately!
The slippage issue does seem plausible...unfortunately!