Trying to replace pin with "finger lever"

A home owner from Stafford, CT says:
May 28, 2020
I have mutiple storm panels with this flap piece broken off. I have included pictures of a functional and broken piece. I believe it to be a pin type set up, but it is off center, with a grip on the end that extends into the track for friction. I have tried several places, but so far have been unable to come up with a suitable replacement.

The spring attached is EXTREMELY tight, and if I do find the part, I'm still not sure how I'm going to get everything apart to complete the repair.

Any help or direction is appreciated.
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Tom from SWISCO responded:
June 1, 2020

I wasn't able to find a good match for this latch. The only thing we have in our inventory that may work is our 91-179, but I'm not sure how its size compares to your original.

Truth be told, I don't think you'll have a lot of luck finding this part. Storm windows are dying off these days since most home owners are opting for vinyl windows. It's getting harder and harder to find the rights parts to repair them. I apologize for the inconvenience. 
Slide Bolt Assembly
Slide Bolt Assembly
91-179
$4.35
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