Mix and match

A handy person from Colorado says:
November 5, 2023
I've got a tilting window with 22in plain channel balancer. They are labeled 21TG.
The pulley mount is broken on one side. None of the preassembled balancers on your website match. The shoe appears to match a 15-014 but I think it is the top of the shoe that is worn away. The closest balancer is S770. The sash pivots seem to be good.

Can you assemble what I need or should I order a pair of S770 and a pair of 15-014 and replace the bottom terminal clip with the locking shoe? Doesn't seem that hard, but want to be sure it will work. Thanks.
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Lauren from SWISCO responded:
November 6, 2023

Hello, thank you for posting, 

We can assemble the 15-014 knife lock shoe on the Series 770 channel balance via a custom order. To further review, I will need to know the weight of the window sash, as the 21 TG stamp does not directly translate. 

Please also confirm how the balance installs at the top. Does it use a screw through the metal like the Series 770 or does it have a rivet at the top to install with a hook? Pictures would be best! 

How many balances do you need? 
Balance knife lock Shoe
Balance knife lock Shoe
15-014
$1.24
22" Series 770 Balance
22" Series 770 Balance
S770-22
$12.27
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