How to fasten new spiral balance

A quick learner from Tenafly, NJ says:
Hi this Ed.Anton recently purchase new balances for my windows but the existing are fasten Different than new ones. Image of the old balance. Do you have any solution?!
User submitted photos of a window balance.
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Paul from SWISCO responded:
I see you purchased our S200-16. I do not believe this was the correct choice. You have old wood window spiral balances and I believe our Series 500 with a 17-007 bracket would work better. See what you think.
A quick learner from Tenafly, NJ says:
Yes thank you.Can I exchange these new ones.?!with 500 series?
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Tom from SWISCO responded:
Take a look at our Return Policy for information on how to return the incorrect balances. You can then purchase the new balances as normal.
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