What type string material are you using? Some string materials are more prone to fraying than others. 8125, for instance, frays more than 452+ in other words. You might want to take a look at string materials before you buy another one, to get one with less fraying properties. Be sure you keep it waxed too. This has a lot to do with string life, and the condition of your strings. Just my two cents. Be safe.
Shoot Straight
Derbytown