Brads pic above is for more pos caster, and that is what you want. In effect, when the bushings are put in that way, the rear of the UCA ends up being a little closer to the centreline of the car, and the front mount of the UCA is held out a little further from the centreline of the car. This slight difference in mounting position (from stock), effectively moves the upper ball joint a little bit towards the rear of the car, giving you more positive caster.
MOOG never envisioned their offset bushings being used this way, that is why their instructions confuse the issue - toss them.