I think you ought to shoot it till it snaps. Then you can possiblyneed a new bow, as something else may snap with it. Then you have a chance to try some new string accessories to go with it. Keep a first-aid kit close by as you may sustain some damage also.

Seriously, you should change them out every couple years or so. And instead of generic strings or Zebra's (even worse) try some good ones. Right here on this site you can look up Gibblet for a good set. Custom ordered just the way you want them and,IMO, just as good as WC's.

I just put some of his on my bow yesterday and they are pretty impressive to say the least.