Weather shield double hung sash tilt windows

A quick learner from USA says:
I am looking to replace a number of channel balances and also the weather stripping on both sashes that is on the top/bottom and where the 2 meet and along the sill

2 windows - sash balance x4 28HD Height, width: 29" long 9/16 wide ( i included a photo as well) (stamped 28HD/ weather stripping for both windows

2 windows - sash balance x4 no marking Height, width: 25" long 9/16 wide ( i included a photo as well) (stamped 24HD)/ weather stripping for both windows

Would you be able to assist me in getting the right parts ordered?
User submitted photos of window hardware.
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Paul from SWISCO responded:
We may be able to help, but I will need a bit more information. Can you show me a picture of the s hoe attached at the end of the balance cord? Thank you!
A quick learner says:
Attached is a picture of the shoe, let me know if you need more detail.
User submitted a photo of a window balance.
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Paul from SWISCO responded:
Thank you. Take a look at our Series 751 ribbed channel balance, this appears to be a good match.
A quick learner from NJ says:
the shoes on the balances i received do not lock into the channels correctly - is there anything we can do to amend these ones?
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Tom from SWISCO responded:
Can you tell me exactly what the problem is? Did you see our installation video? This may help you install it.
A quick learner from Nj says:
The metal portion of the shoe does not lay flat when locked downside to part of the side channel having a rib that gets in the way of the metal piece. The old shoe had a cut out to allow it to close over the rib on the side
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Paul from SWISCO responded:
I'm sorry, but I've never heard of this problem. I'm not sure what could be causing it. Could you show me a picture of what it is you're describing?
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
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