My factory strings on the same bow (which truly do suck at best as @Rob5589 said) lasted for over two years and thousands of shots while being waxed maybe once every 4 months. Your cable slide is the problem, I really am at a loss for why PSE keeps telling you to wax every 20 shots. Sounds ridiculous.Do you wax your string every 20 shots? PSE is saying the wax starts to deteriorate every 20 shots. I got the bow about 3 weeks ago and 150 arrows through it without wax. So I guess its my fault.