Adjustable strut rods are NOT for caster adjustment. If you need more caster adjustment, you should either get offset upper arm bushings, or aftermarket upper arms. The adjustment on the aftermarket strut rods are only to assure you get the lower arms in the correct position to avoid binding. Trying to adjust caster with strut rods will result in the lower arms binding in their travel.
Thats exactly what I though when I watched the video and again I don't recall the manufacture but yeah in order to get any caster out of it you would be putting undo stress on the control arm bushings. Thanks.