Channel balance replacements for Kinco windows

A handy person from Lakeland, Florida says:
Need replacement spring assembly for Kinco windows. This would be for the balance channel. The springs are rusty and the cords are dry and have given up their elasticity. Also, the plastic tops have been destroyed by the extreme heat from sunny days. Also the pulleys have been dried out and have broken. Can I get a replacement? I need about 4.

The overall length without the plastic ends is 24". Also, there are absolutely NO markings on the barrel other than a number---- 23-3. That's it.

A customer submitted photo of channel balance attachments.
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Tom from SWISCO responded:
Thank you for posting. Before we can offer any suggestions, we need just a bit more information regarding your bottom shoe attachment.

Please refer to the following chart and let us know which part matches your shoe.
A SWISCO guide to identifying balance shoes.
A handy person from Lakeland, Florida says:
Gentlemen; I have meassured the width of the attachment and it is 1" with NO wings. Most closely resembles 15-002. Hope this helps. Look forward to hearing from you. Thank you. Again, the length without the plastic is 24"
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Tom from SWISCO responded:
Thank you for the information! Please take a look at our S351-24 Channel Balance with a 2330 stamp option.
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