I ran my own boat repair business for about 10 years. In this situation, I would have replaced the cable. This is a very inexpensive repair. Certainly cheaper than most advertisements. This way I keep the customer, he "advertises for me" that I stand behind my work, and I have the oppurtunity to regain lost revenue through repeat business as well as possibly picking up new customers. It turns a problem, into a situation where we all win (customer gets a new cable). Not every problem is this simple though.