The window was installed in new construction about fourteen years ago. It looks like your S-795-36 could be the right part. Also, 36C is stamped on the balance.
I have attached a photo of the bottom and top of the balance. You cannot see the screw clip on the top because it is still attached ot the top of the channel. I haven't figured out how to remove the channel yet because it does not seem to attach like in the some of the videos I have looked at on YouTube.
If you can confirm that this is the right part I will order two of them.
Thank you.
Carmen A