Mossberg fan: No rest is going to magically tune an untuned bow. I find it best to start any bowsetup by setting the tiller as even as possible. You can get pretty close to an even tiller by simply tightening both limb bolts down, then backing them both out an even three turns each. This allows adjustment for both weight and tiller if needed later. The biscuit should be of the correct size for the arrow so that it fits loosely around the shaft of the arrow. A tight fitting biscuit will rob energy from the arrow and also will be difficult to tune. The biscuit should be installed so that it is parallel to the bowstring, not tipped forwars or tipped backward. The nocking point for the arrow should be placed so that the arrow is at a 90degeee angle to the bowstring. On most righthanded bows the nocktravel is forward and to the left about 1/8" on account of the stresses imparted on the bow by cam leans and the cableguard; therefore the optimum windage setting for the rest is often about 1/8" to the outside of the centerline of the bow in order for the bow to launch its straightest arrow. I reccomend grouptuning for the optimum windage setting for the bow. When the bow is shooting correct spine arrows and hitting the same vertical line and the arrows are not nockleft or nock right you can tighten the windage bolt and leave it. If the tiller of the bow was adjusted evenly the bow should be shooting a level arrow into the target. If the bow is shooting a nockhigh arrow you should tighten the lower limb bolt to correct the tiller and achieve a level arrow in the target. If the bow is shooting a nocklow arrow you would tighten the upper limb bolt to correct the tiller and achieve a level arrow in the target. You can leave the nocking point at the 90degree point on the bowstring and make all of you fine adjustments with a wrench. I do reccomend using the correct spine arrows or a heavier spine arrow with the whisker biscuit. You should have good results with the cock feather up or to the outside. I wish you luck in your bowtune. I hope that my explanation of how the whisker biscuit should be installed and how the bow actually works was written in a clear and understandable manner. Good luck hunting!