PA, you didn't state which serving(s) is getting worn. If it is just the center you can just get it replaced at the local pro-shop. Also, the type of serving material makes a big difference as far as abuse. I use a .062 braided and can expect to have it changed maybe twice before the string actually wears out. I usually replace my string about once a year, but I also usually drag my bow through a lot of brush and briars while hunting.