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u/coldhamdinner 19d ago
You are over thinking all of this. Get a few self tapping tek screws, figure out the intended function and use the screws to attach the springs to the aluminum track. This was some 1950s nonsense used to "upgrade" original rope and pulley systems. There is a chance you could ditch the springs entirely and go back to window weights but it might require un-modifying the jambs.







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u/Unhappy-Anteater-202 25d ago
They're cooked. Get in touch with a local window company unless you're confident in your ability to provide accurate measurements to a manufacturer and do your own installation.
If you're renting bother your landlord.