Replacement Coil Balance System

A quick learner from Wilmington NC says:
Coil that has a #5 on it
coil balance
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Paul from SWISCO responded:
Your balance system was our Series 151, which the manufacturer discontinued and replaced with Series 150. We do still have 15-141 pivot shoes that fit Series 151, if your coil springs are still good. You could get away with just replacing the shoes. If not, you will need the 15-140 pivot shoes, which use Series 150 coil springs. For your #5 coil spring, you would order S150-5.
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