Need a coil balancer for a reliabilt 7100 series window

A home owner from Hamilton Twp New Jersey says:
I removed the old balancer. I only need the stainless coil. Has 7R on the plastic housing. It has a light blue pivot. The coil is stamped 8ED and has 2 holes exactly like your series 180. I'm not sure of the weight. maybe 6 or 8 lbs. Thanks for your assistance.
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Casey from SWISCO responded:


Could you show us a photo of your pivot shoe housing and coils removed from the window? Once we can determine exactly what you have, we should be able to point you in the right direction. Thank you!

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