Andersen operator cover fit

A quick learner from Ohio says:
I just bought two Andersen operator covers but they won't snap into place. Do you have other sizes?
See pictures.
User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
They don't really make this cover in different sizes. Do you have the old one handy? I would like to see it. I'm thinking you may have needed a different cover.
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