Over twisting is possible, the most simple design to work on is a Single Cam bow IMO, all you need is BH, ATA and Cam Rotation. If working on a single cam bow, the biggest thing that affects the DL is the cam roatation. Ideally if you get the ATA close, your can twist the cable and it will bring the cam around to proper orientation, without affecting the ATA too much. With the cam in proper orientation the BH should fall right on. One thing that is subjective is nock travel, and I will go far enough to say; that not one design gives 100% Perfect/Level Nock Travel. Someone said above that the string affects the nock point a lot on a single cam, well, if you put a quality string on, your don't have to worry about fussing with the nock point. 2 twists per inch is a maximum, I never go past there, if it takes more twisting than that your need a new string. The thing with single cams is, I don't need to synchrinize cams together, althought the Binary cams are supposed to work well out of time, I can see let-off and draw cycle being affected if so.