One of the Linn people wrote quite a bit about this, suggesting ranges for different cartridge body materials. Sorry, don't have the link.
The engineering tables which I have seen relating to screw or bolt materials and tightening torques indicate maximum torques, not optimal torques. It seems...
That was my thinking exactly. The D/C KRSP is a delight - a touch more gold than silver, which pairs well with my ESL's and DIY SS electronics. But I can't help wondering about a stone body ...
Interestingly, a Panzerholz wand makes a significant improvement too - reasonable rigidity and great...