They usually fray and break where the cord comes out of the pulley from what I have read on the forums.Update - the replacement cord arrived today so I decided to swap it out to be on the safe side. I’m glad I did. When I took the cover off to remove the old cord I could see significant fraying where it fastens to the ACUdraw. I waxed the new cord and had it installed in no time. Lesson to be learned is take off the cover to inspect the full cord, not just the part that pulls out.