Hi Ucmgr,
I am Diver, from Italy; I've rebuild my Red Signature from a specialized factory (He works on Koetsu, Benz, VdH, Clearaudio); you can change the diamond with the new "Geiger Cut", but I think that the real problem is the Elasthomeric rubber; if it hasn't the normal phisical characteristics the sound has a low dynamic; now he has the possibility to have an equivalent el. rubber, with the same width; after is only a problem of settings inside the pick-up; having velvet sound or crystal sound is largely depending from the tightening of the wire.
Good luck!
I am Diver, from Italy; I've rebuild my Red Signature from a specialized factory (He works on Koetsu, Benz, VdH, Clearaudio); you can change the diamond with the new "Geiger Cut", but I think that the real problem is the Elasthomeric rubber; if it hasn't the normal phisical characteristics the sound has a low dynamic; now he has the possibility to have an equivalent el. rubber, with the same width; after is only a problem of settings inside the pick-up; having velvet sound or crystal sound is largely depending from the tightening of the wire.
Good luck!