240Z inner tie rod "swinging torque"

I am going through my 240z steering rack and am in the process of reassembling. I've measured and adjusted the "pinion rotation torque" and the "rack preload" but am having problems understanding the tie rod "swinging torque." The FSM gives the range as 5.8-10.8 ft lbs, but doesn't really explain what you are measuring. So for you suspension experts out there: Am I suppose to tighten the inner tie rod socket assembly so there is no movement until 5.8 ft lbs? If I do this, the tie rod is very difficult to move beyond the small center area. The "grease grooves" in the ball seem to prevent easy movement beyond the small central area. Does the ball move beyond this center area during use or is only the center area of interest? Thanks for the help.