Measure the tiller on each limb and if needed make adjustments so they are equal. Then sync the cams at full draw. I just made a drawing board to draw my Duallys to almost full draw. I used a hand winch and a turnbuckle for fine adjustments. I' m going to fine tune the cam synchronization by serving the yoke area of the buss cables as needed. If you pinch the " Y" of the yoke, you' ll see that it slightly moves the cam. Sync them at full draw with an arrow on the string, or just a nock, and your release for best results. I' ll try to post a pic or get someone to do it for me when I' m done with it. The cost is less than $20.00.