Searching for Balance clutches MGM windows

A quick learner says:
I am trying to locate replacement balance clutches for MGM2860 series. They continue to break and the windows are 11 years old! Company says they no longer have them! Part number, I believe, is 23020. Invoice says insert power number 2 phill. Info is from an invoice for replacements in 2010. The break is where the C hook attaches onto the spring.. the plastic is weak and not strong enough to handle use and heat. Dries out and becomes brittle and snaps off.
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Casey from SWISCO responded:

Hello,

The style of your shoe resembles our 15-236 but yours looks a bit narrower than ours, which measures 1-1/4" wide. If your shoe is 1" wide, you'll need to purchase new S795 balances, as well as the 15-194 t-lock shoes to replace the wider 15-195 attachments that come with the stock balances. Thank you!

Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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