toe in or out is done on track rod on rear of axle ,drag link just needs to be set centrally ,pas box has a centre position were there is no play in box either side of this play increases to full lock ,if pas box has been set badly during build this centre spot may be to one side of full travel of box ,but in good box this is center of travel,when pas box is central so should wheels adjusting draglink length to achieve it ,adjust steering wheel by removing ujs and refitting
Thats the job of the track rod only.doesnt it affect the toe in or out position though as the rhs wheel pivots central to the track rod and drag arm? just curious.