Windiw crank replacement

A quick learner from Lancaster, NY 14086 says:
The stop for my Truth window crank has worn down and the pivot arm jumps it not allowing the window to shut all the way. I need to replace it. I have attached pics of my part and will need several replacementd
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Bob from SWISCO responded:

Thanks for writing in. I'm afraid we don't have an exact match for this operator. Two of our existing sets, the 39-035 and 39-036, as well as the 39-381 and 39-382, might work as replacement options, but we by no means can guarantee this, and in any event modification to the sill may be necessary. Sorry we can't be of more help, and many thanks for considering our business.

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