Replacement Part

A quick learner from Chicago says:
Which coil would best fit these part? Also what would be the weight on the coil?
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Paul from SWISCO responded:

Hello,

I'd recommend using the 15-177 pivot shoe and Series 152 coil spring. These work a little differently than your original springs because ours use a screw to attach the coil to the shoe instead of hooking onto it but it should still work. 

It also looks like your coil is stamped with the number 7, which would generally correlate to the S152-7. Thanks for posting!

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