I shouldn't even post this, but I've got one bow, a 2003 Pearson Freedom that is still wearing it's original strings. Needless to say the bow has not been shot since 2004.
Rarely do I change strings because of wear as I get a new bow every year, but it's not often that I see the type of wear that you are experiencing, but I have seen it.
It would seem that you just happened to get a bad slide or maybe the string had a bad spot in it from day one.
Now go read your PM.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver