Window Part ID

A home owner from Tacoma, WA says:
Not sure of the manufacture on this window. Hopefully you can still figure out what part I need. The arm wouldn't fully retract (completely close). Thanks in advance for your help!

User submitted a photo of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Without seeing the operator removed from the window, it's hard to say what can work. However, look at our 39-253R and 39-253L and let me know if these are a match.
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