Since we don't have an archery section, I guess I ask this here. I have a PSE Silverhawk that I've had for about 10-11 years. I've never changed the string/cable. I don't shoot it that much, and I've probably fired around 1000 shots or so through it over the years. The string doesn't look freyed, but the serving is freying where the arrow nocks. So, should I get it serviced?