Older crestline casement window

A home owner says:
August 25, 2018
Trying to find replacement cranks for my older crestline casement windows . Windows to good to replace and have 3 of these crank assemblies (truth) that are worn out, can not find replacements. Any help pointing me in the right direction would be appreciated. Anything that would work even if I had to slightly have to modify.
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Casey from SWISCO responded:
August 30, 2018

Your operator looks like the old style Caradco Window Crank, 9-1/2", Product Code; 39-028. Compare your measurements and see if you agree. You can update your operators with the Ellipse Style Single Arm Operators, 9-1/2", Product codes 39-028E or 39-027E. If you need a new handle please see 39-114L or 39-205.
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-028E
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-027E
$20.70
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
Truth Folding Crank Handle, 11/32"
Truth Folding Crank Handle, 11/32"
39-205
$11.70
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