Replacement Parts for Simonton Prism windows 2008

A home owner from Macungie PA says:
Please advise if these are the parts I need to replace the above pictured ones:

15-159 pivot shoe
15-259 coil balance pivot shoe
15-255 3/4" coil support
26083 2-1/2" pivot bar

???? S-159-S in appropriate weight
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Jasmine from SWISCO responded:

Thanks for posting! The parts you've selected for your coil balance assembly replacement all appear to be correct, except for part 15-159. That part is not related to these items and is not necessary for the replacement.

To determine the strength of coil spring needed for your hardware, you'll need to check the existing coil spring for a stamp or making. If there are none, then you will need to obtain the exact sash weight and then divide that by the total number of coils needed in the window (in your case 2).

I hope this helps!

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