Channel Balance Help

A quick learner from New Jersey says:
October 8, 2020
I was wondering if you have any replacement sash balances along with 2 additional clips for double hung tilt windows.
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Bob from SWISCO responded:
October 12, 2020

Is the metal channel 15" long? If so, I believe this is an S770-15 with a stamp option of 15B. There seems to be a rivet attached at the top of the balance so that it can attach to the window jamb using an S-Clip like the 19-029 or 19-030, sold separately. Our standard Series 770 attaches with a screw instead, but we'd be happy to custom build balances with a rivet installed on top to use the s-clips. Can you confirm for me that the rivet the s-clips use on your old balance is in the top hole of the metal channel, and not the second-to-top hole? Also, how many balances do you need? From there we'll get this moving for you. 
15" Series 770 Balance
15" Series 770 Balance
S770-15
$11.52
Short S-Clip
Short S-Clip
19-029
$0.65
Long S-Clip
Long S-Clip
19-030
$0.70
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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