I put a new cable and string on my crossbow and shot it 5 times and on the sixth the cable and string snapped. I took it back to the shop that did it and they tried to blame on the nock. Then he tried to blame it on the bolt. These are the same ones I've been using for the past 5 years. Then he went on to say that it was a Barnett and they always have problems. I wanted a free replacement and he refused. He said I could send it back to Barnett. He finally agreed to replace it for half price, $55. Has anyone else had problems with the strings and cable breaking?