Nice to have been use to somebodyThe centre rod does of course connect to the track rods, the arm off the steering box and its mirror on the nearside (pitman and steering arm resp. on realoem). So you have 4 ball joints to contend with. The 'steering arm' appears to have a rubber bush inside so that might be worth a look? BTW I must be losing it because I'm sure your first post says your car is LHD?