Hi Tona, in common with other 4WDs, it is toe-out that is needed - the manual suggests 1.2-2.4mm but it doesn't seem to be critical - I've generally tried to set it at 1.0 -1.5 across the rims and results have been fine.
It needs a bit of patience and some means of accurately measuring rim-to-rim, or tyre to tyre, if you're doing it yourself