Hey guys, I have a STIHL trimmer that has maybe 4 or 5 hours on it because we just get tired of the thing not working right. I did take it back once and of course they just prove that it must just be us. The problem is that if you don't wind the string JUST right, it wont allow the string to come out. I cant think off the top of my head which model it is, but it is one that has the head where you have to wind the string in two channels. My question to you guys is this.......would those rapid refills (think that's what there called) solve this problem. I'm just tired of messing with it. I have two echos I can use but I like to rotate them all. I'm not denying that it is our stupidity, so just relax.