I can easily put XL or even Jumbo eggs in my Oster cooker. I put them in each "hole" as instructed,
and then one in the middle, pricked hole-end up, and then put the lid on. If it seems the lid is not fitting
tightly, just scrootch (my word) the lid around a little, and the eggs will settle into a position where the
lid will fit tightly.

If you are u sure about the size, try extra-large first. They should fit o.k.

N.