Droptines,
The arrow should center over the berger button hole. The whisker biscuit should be parallel to the bowstring not tipped forward or backward. The arrow should fit loosely inside the biscuit not tight. You should set the bow at an even tiller and nock the arrow at 90degrees to the bowstring. The windage for the rest is often about 1/8" to the left of the centerline of the bow on most right-handed bows. You should grouptune to establish the optimum windage setting for the bow using the correct spine arrows for the bow. You can leave the nocking point at the 90degree position on the bowstring and adjust the tiller of the bow if neccessary to achieve a level arrow in the target. A nock high arrow would require that you tighten the lower limb bolt to correct the tiller and shoot a level arrow. A nock low arrow would require that you tighten the upper limb bolt to correct the tiller and shoot a level arrow. If the bow and rest are tuned in this fashion the arrow will go straight through the center of the biscuit very quickly and quietly with no wear and tear on the fletching and your broadheads and fieldpoints will probably hit the same hole. Good luck hunting!