Replacement Spiral Balance for Alcoa

A home owner from Waukesha, WI says:
I'm trying to replace some Alcoa balances for Windows approximately 19 yrs old. The color tip on the balance I removed is yellow (it appears to be 9/16" Diam, 35" long). What replacement balance will work (I don't see yellow tip available)?

Thank you
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Paul from SWISCO responded:
One of our standard tip colors may work for you, but it would depend on your sash weight. I recommend weighing your sash on a scale and referring to the chart on the S600-35 store page to determine the best match.
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