not sure what is needed

A quick learner from MD says:
NOT SURE what part. thanks
Thumbnail of the uploaded file named center window case1.JPG
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Emily from SWISCO responded:

Hi there!

I'm afraid I don't recognize this operator at first glance, but I'm going to have one of our senior experts take a look and see if they could recommend a replacement for you. We'll reach out as soon as more information is available. 

Thank you! 

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Dave Sr. from SWISCO responded:

Our 39-089 and 39-090 look similar, but your gear arm is offset to help clear the bottom track. I'm not sure if these will work, but I'm wondering if you could change the hinges to the 36-004-10 so you could use our operators. Look these over and see what you think. 

A quick learner from MD says:
another photo of outside view
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Dave Sr. from SWISCO responded:

I'm afraid that doesn't tell me anything new. My response from before remains our only option for you, though I can't guarantee that our parts will work. I'm sorry for the inconvenience. 

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