This video shows how to change an element holder in an L&L kiln. There are two methods shown.

Question: If the element holder is replaced by chipping off the lower "lip" will the holder remain in place? It seems that unless some type of cement is used it will just work its way out and fall into the kiln. Would you please elaborate?

Answer: What is left after you follow this procedure is a serrated edge. That actually does an excellent job of holding in the groove. This works in almost all cases - you can always cement it if it doesn't work. One of the great things about these holders is that, when you are done, you have a functional groove - stronger than the underlying brick itself.