Natuzzi have the cables but have been unable to supply fitting instructions. Seemed a complex job to replace the cable and guide, so I purchased a bicycle brake cable with a fitting to suit the Natuzzi 'D' handle, threaded it through the existing outer cable guide and used a bicycle cable bolt on the 'bottom fitting'. Only requires a re-drilling of the existing hole to suit the new bolt.
Total cost approx $15 AUD and about 20 mins.
Royce, November 2010