I have an 08 Firecat pro x that I bought in late Oct. I shoot under 100 shots per wk. I waxed the string the other day and niticed that it is starting to fall apart there are strands that have actually broken. Is this common for factory strings? I have only shot indoors and take very good care of my bow. I'm wondering if I should invest in a better quality string or maybe there is something wrong with the set up.