Are you serious???
In my experience, anything Barnett is crap. I got my boy an RC-150 and the cable snapped inside 50 shots. My buddy's blew up on him while shooting it. Lucky he wasn't hurt.
Probably cheap glue in your case. Either do it yourself or have a pro-shop put new ones in with quality glue.
This also happens to guys who have arrows made at places like Dick's