Paul from SWISCO responded:
December 22, 2016
The Series 770 balance definitely looks like a good match. I'm not sure why the cord is breaking. Can you tell me the weight of your sash?
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Tom from SWISCO responded:
January 4, 2017
Well, if your sash is 16 pounds and the 22C option is too strong, the 22B would definitely be the way to go. That still doesn't account for why the string would break, though. I can't see any reason why that would happen, based on your information. Does it happen to all the balances, or just one?
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