Windows won't crank shut

A home owner from Elgin, il says:
These are photos of one window in our house that will not crank shot properly. We have some that swing open right and some that swing open left. Can you tell us the replacement part numbers we would need to replace the item that is possibly stripped?

I am a homeowner, but currently have a contractor/handyman helping out who could make this repair or swap the part out.
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Casey from SWISCO responded:

Hello,

We'd be happy to help but we'll need to see a photo of the operator with the window open so that the arms that move the sash in and out are fully visible. Thank you!

A home owner from Elgin, il says:
Here are the pictures of one of the single windows.
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Casey from SWISCO responded:

Thank you. Your operator looks like our 39-381 and 39-382 but the link arm in your photo looks like it might be on the longer side. Take a look and see how the dimensions compare. 

39-381 : Casement Window Dyad Operator
Casement Window Dyad Operator
39-381
$57.38
VIEW >
39-382 : Casement Window Dyad Operator
Casement Window Dyad Operator
39-382
$57.38
VIEW >
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
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