Help with channel balances

I spoke with someone in customer care, and he suggested I email pictures of my channel balance.
One of the channel balances broke on one side of the tilt window.
It is 1/2 in by 1/2 inch and has 28F BSI AR stamped on it. I have attached 4 pictures. I believe the window
has been discontinued.

Please see if you can come up with something that will work.

Thank you,

Bill

In doing some research on your website, I think the following parts could replace the current one.
Please let me know what you think.
5900-28 yellow tip spiral balance
26-361 tilt pivot
15-045 pivot shoe

Thank you for the quick response. You are correct the 15-134 shoe is identical to the one currently on the assembly.
I ordered the parts and think this set-up with the spiral balances will work better than the channel balances.

I received the parts today, installed and the window works great.
Only problem I had was determining where to drill and locate the top of the spiral balance without stressing the balance when the window was closed. I installed the balance lower than necessary, but am still happy with the results.
Also I am not sure how many times I should turn the balance when charging without over turning. I had to turn a maximum of 10 turns.

I notice on your video replacing spiral balances, a window sash stop that snaps in the channel is removed. My window takes the same kind of stop, but I cannot find replacements anywhere.
Do you sell that particular stop? I need a longer channel stop than I currently have.
Minimum 5 inches long. Any longer I can cut.