I have two contact leads (on the paddle) that aren't working anymore also. I've only had my unit a year and a month. Seems they shouldn't be losing them that quickly. My rep programmed around mine, too. Only one of my programs was using the faulty contact, but still. I have two. How long until the other one starts screwing up? It seems this is a common problem. I assume it's just due to a foreign object in the body.