Has anyone had trouble with these splitting? I have one customer who has returned her's twice and I told her I would look after the problem. Well they sent me another pair and guess what? One of them was cracked in half right in the package. This lady was thinking of doing a show and is now not too sure of our products. She thinks that the customer service is great but if she has to keep returning products especially on her dime for postage it's just not worth it.