Zieman, I have no problem with your answer to the OP. The point I was attempting to make was the caution that a 12" arm will not automatically be an improvement compared to a shorter arm. Some might infer that from your post, particularly with your emphasis that only the arm was changed.
There are many design/construction differences between your 312 and your Lustre and I believe that was one of your points. That supports the position Raul has stated many times - many elements come into play in matching a cartridge with different arms. For whatever combination of reasons, your cartridge sounds better in your 312. One should not assume it was just because your SME is 12".
I believe you understand this so I was trying to offer a clarification to readers with perhaps less experience. Peace.
There are many design/construction differences between your 312 and your Lustre and I believe that was one of your points. That supports the position Raul has stated many times - many elements come into play in matching a cartridge with different arms. For whatever combination of reasons, your cartridge sounds better in your 312. One should not assume it was just because your SME is 12".
I believe you understand this so I was trying to offer a clarification to readers with perhaps less experience. Peace.