Balances springing out in Atrium window sashes

Home Owner from The Dalles, OR
I have two styles of window, each with a different balance length but same shoes and tops on each.

Both balance bodies are 9/16 inches wide and 5/8 inches deep. The first style of balances is 20 5/8 inches long; the second is 26 5/8 inches long.

The springs keep binding or popping out of the sashes. Will replacing the balances with the same work or do I need a different size?

Thanks.
User submitted photos of a window balance.
4 Replies
Paul
Paul from SWISCO
SWISCO
Expert
We can replace this balance, though it will need to be custom made. However, it sounds like the balance isn't the issue. I think it may be a broken top sash guide. Watch the video below and tell me if this matches your issue.
Home Owner
Wow! You guys have so much great information on your website. Sorry I missed this.

This is what is happening. I removed two top guides (in the pictures) and they appear worn, but not obviously broken. Perhaps I should start by replacing these on all the windows? Do you have these in stock?
User submitted a photo of a top sash guide.
Tom
Tom from SWISCO
SWISCO
Expert
Thank you! I'm glad that video helped. As for this part, it looks a lot like our 18-171. Check it out and see what you think. I see what you mean about the wear. That "lip" on the underside of the top section is looking a little shallow, which may very well be the culprit.
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