I have two different acupros on different bows. One works great and the other will begin to fray after just a few shots. It has been looked at by the local ten point dealer three times and they can't seem see why this happens. The string has been replaced three times also. We finally gave up put the bad one on the Horton vortex and I just cock it by hand. The good one is currently working well on the Shadow.
2nd is there’s so much tension on my stealth that the cord is fraying on the bolt holes that hold each spool on.
The bolts are countersunk and the edges smooth but with so much tension it’s causing an issue rubbing