I had the same problem. Dont replace the string and cable with out getting a new cable guard from martin. Its a very common problem. Throw away the sos, its a total loss. Mine tore in less then 300 arrows. My best advice is to get a sims string decelerator, they are around 40 on ebay. I just got one and love it. Much cheaper then replacing sos constantly. And you can use a kisser if you choose. my 2 cents.
"If Darwin saw the same sunrise and sunset, that I see from a duck marsh, or my tree stand; then he would know there is a God, and that He created all of it." -Ford-