Brinsea Mini Advance and Call Duck Eggs--which disk?

[quackersandco]

I bought this incubator this summer and love it. I have the standard 7 egg tray and am wondering, with the smaller call duck eggs, if the small egg tray would be possible. It says the small tray will hold 12 eggs up to the size of a pheasant, but I have no clue how pheasant eggs compare to call duck eggs in size. Thoughts or experience?

 

[quackersandco]

I just found this thread with photo, so maybe it's possible.

https://www.backyardchickens.com/t/619868/what-size-egg-trays