Justin, do yourself a favor and throw away the long string, they lie. Before you even put the bow on the tree, cut in your string grooves, then get or make a string that just fits into the string grooves, and tiller with that. Also there is a thread on the Bowyers Bench titled Tillering Gizmo. It can't be very far down the list, and that tool will help you a lot. Work the bow on the tree with the longer string till you have the limb tips bending to about 7 or 8 inches. Then get a regular string on the bow and brace it to 6 inches. Once braced to 6 inches, check your tiller between top and bottom limbs. You want at least 1/8th to 1/4 positive tiller on the top limb. You need to get the positive tiller as soon as you can on the tree. Actualy you could get it close at the 6 inch brace height before even pulling it. Reason being, if the top limb is stronger than the bottom limb, and you keep working the bow down the tree, the stronger top limb is going to stress the bottom limb more than it should be, and that will cause the lower limb to take more set, or it could work in reverse and cause the top limb to take on more set ya dig? Roy