Pivot shoe for 37" series 600 Spiral Tilt Window Balance

A handy person from Gaithersburg MD says:
I already used 17/32"(part#15-015) but it was a little thick, that's why I ordered 1/2"(part#15-046).
Am I right with this one or I am wrong again. Please help me with right part.
Thanks.
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Casey from SWISCO responded:

Hello,

If the dimensions you've provided are accurate, I agree that the 15-046 would be a good replacement option. The width and thickness are essential to finding a replacement that will fit in the window channel. Thank you. 

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