Ordered the wrong part

A professional from Dayton OH says:
September 11, 2023
Hello. I ordered 7lb left and right balances. The problem is with the size of the notch that the window drops into. It is too small. I hope the pictures help tell the story. Would you need measurements of the original slot to recommend the right product?
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Jasmine from SWISCO responded:
September 12, 2023

Thanks for writing in! We suggest using our 15-177 pivot shoe to replace the coil balance shoe you have. The compatible coil spring would be our S152-7. Take a look over the dimensions below to confirm that this is a better fit for you. 

Alternate image for 15-177
Alternate image for 15-177

Keep in mind you'll also need to replace the balance spring covers and the pivot bars as well. The parts that make up the cover for the balance are the 15-143 coil busing, 15-144 coil bushing cap, and the 15-145 coil support barrel.

I'll need to see a photo of the existing pivot bar to determine if it is compatible with the 15-177 or to determine what a suitable replacement would be.

Feel free to reach out with any questions in the meantime.
Coil Balance Shoe, Slate Blue
Coil Balance Shoe, Slate Blue
15-177
$3.47
7 lb Series 152 Coil Balance
7 lb Series 152 Coil Balance
S152-7
$4.80
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Support Barrel
Coil Support Barrel
15-145
$0.49
#8 x 3/8" SS Pan Head Philips Screw
#8 x 3/8" SS Pan Head Philips Screw
33-072
$0.30
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