I've had problems with CAOs before, but not with the wrapper.
I've noticed that the L'Anniversaire lines (Cameroon, Maduro, and eXtreme) seem to often have slight uneven burns and other light nuisances. Sometimes they correct themselves, they always taste right, but I have had some especially ugly-looking ashes and burns on CAO maddies before.
CAO Gold, on the other hand, always seems to be flawless! Criollos are kind of mixed, and I haven't had a Brazilia in a long while, so I can't remember how it burned.
I do know that each line of CAO is made in a different factory (SteveR posted about it here....
http://www.cigarbid.com/auction/forum/forum.cfm?action=list&forumID=1&messageDisplay=0000000015782
), but I can't blame it on the rollers since, according to Jon, Gold and Maduro are made in the same factory in Esteli, Nic. Hmmmmmmm.