Andersen window casement operators

A quick learner from USA says:
Here are photos of the Andersen window casement operators I'm looking for. The crank is 7 1/2 inches long I measured.
Thumbnail of the uploaded file named casement arm
Thumbnail of the uploaded file named broken crank
Thumbnail of the uploaded file named ANDERSEN RH
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Dave Sr. from SWISCO responded:

This is an old, old Andersen operator. I'm afraid we don't have an exact match for this. My first thought would be for you to contact an Andersen dealer in your area to see if they have some old stock lying around, though I got a feeling they'll charge you an arm and a leg. 

The only other thing that comes to mind is maybe substituting with something like our 39-435 operator, along with the 39-542 track. I've never done this myself, so I can't confirm if it will work, but it may be worth considering. Look this hardware over and let me know what you think.

39-114L : Crank Handle, 11/32
Crank Handle, 11/32"
39-114L
$4.25
VIEW >
39-205 : Truth Folding Crank Handle, 11/32
Truth Folding Crank Handle, 11/32"
39-205
$10.77
VIEW >
39-542 : Roto Casement Track
Roto Casement Track
39-542
$11.52
VIEW >
39-435 : Roto Single Arm Operator, 7-1/2
Roto Single Arm Operator, 7-1/2"
39-435
$21.64
VIEW >
SWISCO Window Operator Crank Handles
SWISCO Window Operator Crank Handles
VIDEO
WATCH >
Watch How To Repair A Casement Window Crank Operator
Watch How To Repair A Casement Window Crank Operator
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
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