ok, let me try putting what im thinking into words. when u weedwack, do u use the end of the string to hit the target, or the center? example: im trying to teach a new guy how i want it done. if i am wacking a fence, and the strings on my wacker are 7 inches long, the head of the wacker should be about 7 inches from the fence. correct? this is the way i do it. the very tip of the string wacks the target, i can weedwack all day long with bumping the head maybe 2 times. if u use the center of the string, it keeps breaking. anyone get what im saying? how do u do it?