You can probably do it yourself if you have a bow press. Just take the tension off the limbs and press the axle back in the cam, then go to the local hardware store and buy a "C" clip the same size, ($.10 or so), and with a pair of pliers push the "C" clip in the notched out spot in the axle. When all is finished release tension off the bow, let cool for 10 minutes and enjoy!