Replacement "foot" or whole spring

A quick learner from 07801 says:
May 17, 2021

The plastic bit that holds my windows up has broken on about 6 or more of my jambs.

I am lookin for a replacement or alternative.

No name or Number on windows. Built 1978.

Thanks

Steve C.

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Paul from SWISCO responded:
May 20, 2021

Hi, Steve.

We carry our 20-006 clutch set for your window. Unfortunately, there isn't a substitute that would work on this special balance system. Your only alternative is to purchase new jamb liners at your nearest mill work.  
Four Piece Crestline Clutch Set
Four Piece Crestline Clutch Set
20-006
$57.98
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