I have a customer who I made a radial pin cue with and ivory joint for. He says after he shoots with it for a while the joint loosens up and he has to tighten it. Has anyone had this problem or know of anyone who did and if so what did they do for it? One of his friends said that this is common with radial pins. I have never had the problem before. I would look at it but he lives in California. A long way from me. Butterflycues