OK, inquiring minds want to know...where did you get the parts? Not the headshell, that's easy, but the locking collar and the contacts to go with it.
Also, you might as well rewire the arm while you're at it. I think there's a thread here at AK with pictures, showing how to rewire the Dual tonearm.
Wires from a PC mouse cable are supposed to be excellent. They're even in the right colors.Just buy any of the hundreds of tonearms on E-bay with an SME Bayonet/Collar and use that. I think this one was from a Sony.
The wires and contacts are all there usually connected tot he collar . On mine the wires are in the tonearm all bunched up till i figure out how to get them
through all the way. Not sure if they are long enough so I may need to get new wires. Might use some from 1877. Used them fro my AR XA and they work nicely there.
nashou