Rear cap (fiberglass) cracking

[Chip]

I have some of these in several places so I am interested in the solution to this as well. My dealer looked at the one on the top of my front cap which has been there 2 plus years and said it was not a problem. I called Keystone and they just said have your dealer look at it, which I had already done. So unless it gets worse I am not going to do anything at this time.