Casement operator question

A home owner from Maryland says:
When attempting to close casement window, the cover spilt and the window would not close, with the inner spline coming out. Question whether the locking ring can be replaced, or need a full new operator. Would also like to confirm that this is part 39-035.
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Emily from SWISCO responded:

Hello!

It sounds like your worm gear is stripped. Unfortunately, this cannot be replaced which means you'll need a new operator. Yours looks like a match for our 39-035, but compare our dimensions to yours to confirm that this matches what you need. 

Dimensions for 39-035
39-035 : Truth Hardware Entrygard Dyad Window Operator
Truth Hardware Entrygard Dyad Window Operator
39-035
$30.82
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Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
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Anatomy of a casement window
Anatomy of a casement window
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