ding ding, You will not be spinning that much with those skis anyway, so you should not be to worried about swing weight. Also think about how you ski, you ski on the ball of your foot, if you ski flat footed you will end up in the back seat. full center puts the ball of your foot way out in front of the side cut. going two cm back still gives you plenty of tail for switch pow, but also keeps you from being out infront of the ski.