Window balance

Looks like you have our S770-24 channel balance. Look it over and see what you think.

As for the pivot shoe, you may need to make a cutout if none exists already. See the video below for more information on how this can be done.

Thanks for the update! This pivot shoe appears to be different than the one shown in your first post. Is this from a different window, or the same window? The reason I ask is that pivot shoes should be symmetrical in one window. If they're mixed and matched we may need to figure out what you were originally supposed to have.

Assuming this is a different type of window with symmetrical shoes, then I'm confident we can replace this one. Start by looking at our 15-179. This appears to have the same design, though it's 15/16" wide and 9/16" thick. Height doesn't matter. Look over the width and thickness and see if they match yours. Plus, this should be fully compatible with your current pivot bar (the long silver piece you show next to your pivot shoe).

I'm not sure what you mean when you mention the metal on the end. Are you referring to the "teeth" at the top that hold the balance spring? If so, it doesn't matter if they're metal or plastic. The size of the pivot shoe itself is more important.

Your pivot bar appears to be in good condition. I see no reason why you need to replace it.