Window balance replacement

A home owner from Massachusetts says:
Looking to replace the balance on my window as the window will not stay open anymore.

Please assist me with the correct parts!
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Tom from SWISCO responded:

It's tough to tell what you have while the balance is still installed. Some important details are obscured. That said, I believe our 15-180 pivot shoe may be a match for yours. If it is, then you can also use our Series 190 spring, 15-186 single coil clip, and 15-182 bushing. 

Please review this hardware and let me know if any of the parts I picked out differ from the system you have now.

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