Top sash guide

A quick learner from New York says:
Hi,
So I have identified the top sash guide as 18-033, but my window also this L-Shaped spring piece that I can't seam to find anywhere. Let me know if you recognize it.

Thanks!
Luke
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Casey from SWISCO responded:

It is possible that your top sash guide could be our 18-033. Carefully compare the style and dimensions on our product page to your original guide to confirm. 

As for the small interlock guide with two prongs, I'm afraid it has been discontinued for a long time now and there are no known substitutes. I am sorry we cannot offer a replacement for that specific part. Please let us know if you have any other questions. 

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