Need help with correct Awning Operator

A quick learner from New York says:
I took my part off the window and need help identifying a matching replacement. Your 39-054 looks like it would work, just need an extra set of eyes to confirm. Thanks.
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Bob from SWISCO responded:

Thanks for posting. The one concern I have with the 39-054 is the offset in the link arm; it doesn't appear your old operator has this feature, and it certainly could affect function. Take a look at the 39-056. Compare the dimensions to your old part. Do you think this could work for you instead? 

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