I'm looking for 6-egg cartons in the jumbo size. I found them that are sized for S,M,L, and XL sized eggs, but I'm wondering if they'll work for big duck eggs. I know this is the chicken forum, please bear with me as I'm only trying to reach more folks who might have the answer to this problem. I haven't weighed these eggs, but they have to be jumbos. Of course I can find jumbo-sized dozen-egg cartons, but I want the six-egg style. Will the S-M-L-XL size work?