Simonton balance springs

A handy person from Prince George Va says:
March 22, 2022
Replacing the balance springs and pivot shoes to the upgraded setup. The old spring has 4095 stamped on it so what would be the correct 159 series spring.
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Casey from SWISCO responded:
March 23, 2022

Hello,

Take a look at our video below that shows our recommendations and installation process to replace your original Simonton assembly. Thanks for posting! 
10.5 lbs Series 159 Coil Balance
10.5 lbs Series 159 Coil Balance
S159-10
$6.27
How to replace a Simonton coil balance
How to replace a Simonton coil balance
VIDEO
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Replacing the Simonton Coil Balance
Replacing the Simonton Coil Balance
GUIDE
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