The jacket, coax shield and PTFE wrap were stripped off the length of cable running inside the arm, it wouldn't be flexible enough otherwise. An additional strand of wire was run through the arm for grounding, it's connected to the screw on the right which is threaded into the conductive carbon wand and the stub of the headshell. The other screw is threaded into the carbon and the inner Aluminium tube, so all the elements are grounded, this was confirmed when checked  for continuity.