cartridge headshell screws.

nope

tzh21y - 
Ignoring the possibility that alignment geometry changed when switching screw sets, seems to me another potential variable contributing to the difference in sound you report might be the amount of torque used to tighten each screw.  Was that the same for all sets?  Also, I'm assuming you reset tracking force as necessary after installing each set?  By the way, are you comparing 3 sets of screws (i.e., retipper's screws were different than the original Benz screws) or just 2?  Interesting observation but not sure what to do with it.  Detail on the changes you heard would be helpful....although I, personally, can't see myself switching out mounting hardware to "optimize" the sound from my TT.  

Lots of variables with mounting hardware. Weight will be one. Aluminum will be much lighter than stainless or brass for example so you can have minor changes in effective mass that might improve or degrade things. 

Magnetic vs. non-magnetic hardware would be potential issue with moving coils also-never a good idea to crank magnetic hardware right up against a moving coil cartridge. That could easily affect sound quality as well. 

Dear tzh21y: Well, your cartridge comes from a fresh retip from a rettiper other than Benz Micro.

You used 3 sets of screws and as other gentleman said the final alignment with each crews set was not exactly the same ( maybe similar but not exactly the same. ).
In the other side what the gentlemans said here about screws torque is important and it matters because if not the same torque level on both screws the kind of resonances between the cartridge body and headshells changes its frequency range.

I like to use " maximum " torque that permit the cartridge body/headshell build materials. When a little loose ( for me. ) distortions are higher but this is me.

The difference in between those 3 sets of screws weigth almost does not affect the effective mass that could result in a change in the cartridge/tonearm resonance frequency, is really insignificant its contribution on it for we can hear it.


Regards and enjoy the music,
R.