![simintontopspringleft](images/pictures/2023/05/654051.jpg)
![IMG_6658](images/pictures/2023/05/654050.jpg)
![Siminton Right 6659](images/pictures/2023/05/654053.jpg)
![simintonfamilyroomlabel](images/pictures/2023/05/654052.jpg)
Thank you kindly for getting back to me! This is a huge help. Based on what I see here and the fact that this is a Simonton brand window, my recommendation is the 15-259 pivot shoe. This part uses the Series 159 coil springs and the video below will walk you through the process.
Let me know if you have any questions!