Truth Hardware Help

A quick learner from Bartlett, IL says:
The hand crank on my 27yr old casement window broke off (see image 0155). It looks like the crank mechanism is made by TRUTH (see image 0158). I believe the windows are Semco but not positive. I was going to order Truth Hardware Entrygard Dyad Window Operator: Product Code: 39-036, but wanted to make sure this is the best replacement part. And do I need any additional parts? The arm online looks shorter than what I have, plus the gears are on the opposite side. Can you please direct me to the proper replacement piece?

Thanks for your help!
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
The 39-036 does not appear to be a match. See our 39-031 and 39-032 to start out. Make sure all of the dimensions we have match up to yours.
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