Caradco window crank

A home owner from bridgewater, nj says:
My window crank is broken and I need a new crank mechanism. I looked at your cranks and the one that appears to be correct for the window that I have (photos enclosed) is model number 39-020. Am I ordering the correct part number along with the 39-520, 39-205, and 39-107 parts.

Please respond so that I can get this order rushed out immediately.
Thanks
Steve M.
User submitted photo of their broken Caradco window crank.
Profile picture of Donna
Donna from SWISCO responded:
No, your operator does not look like our 39-020. It looks like an operator similar to our 39-013. I cannot tell for sure because we need the length of the arm of your existing operator.

A cover does not work with the 39-013 style of operator by the way.
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