Plygem coil part

Hello,

I believe that we can help but we would like to see a photo of the pivot shoes that your coil springs anchor to. If the two windows use different size coil springs, that would indicate that they use different balances, so we would need to see the pivot shoe from both windows. That will help us confirm which coil springs would be compatible. Thank you! 

Thanks for getting back to us. We offer the Certainteed 15-192 pivot shoe, which uses the S170 and S171 coil springs, along with the parts listed under the related items section of the 15-192 product page. Please note that some customers have reported that they needed to shave the front of the shoe down to install it in their window jamb.

We also offer a conversion video shown below that works for both Certainteed and Simonton windows that use this type of assembly. Take a look and review the full process below to see which option you'd prefer for your repair.

We're happy to help! Just let us know if you need anything else. 

I do not recognize the part shown in your most recent photo. If you could show us where it installs in your window and elaborate on the function of the part, that would help us confirm if we carry a possible replacement.