Thanks for reaching out to us! I am confident we can supply you with the replacement channel balances you need but I'll need to see a photo of a balance with a spring and pulley system, in tact. Most importantly, I am looking to see a photo of where the spring and pulley meet at the center of the balance.
Once I have this information, I'll be able to determine the exact replacements you need.
Please feel free to reach out with any questions you might have in the meantime.
Thanks for the photos. The balances you have will need to be a custom made assembly. That said, I've forwarded a link with a quote for (2) of these balances, as there is an order minimum of (2) for custom assemblies. If you would like a larger quantity of balances, please let me know and I'll be happy to update the quote for you.
Please don't hesitate to reach out with any other questions you might have in the meantime.