Replacement Balance and T-Lock Shoe Needed

A home owner from Waxhaw, NC says:
I have posted photos of the PlyGem parts I need. The t-shaped item appears to be shorter than the one I found on your site that reads an overall length of 1 in and 7/8 inch. I would also be interested in purchasing a bulk package of the metal window springs? that are listed as Part number 253186-30C. Both purchases would be in bulk (30 springs minimum) and 60 t-shaped plastic parts.
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Bob from SWISCO responded:

Thanks for posting. This type of T-Lock Shoe, with the characteristic groove in the stem, was made by a manufacturer that no longer exists. Our T-Lock Shoes will be incompatible with your old balances, so I'm afraid you'll need to replace all your balances in addition to the T-Lock Shoes. The balances you need are our Series 795. The T-Lock Shoe you show in your photos can be replaced with our 15-195 1-1/4" Open Cam shoe. You can swap this out with the shoe that comes by default with our Series 795 Channel Balances (the 15-195). Let me know if you have any other questions.

How to Install a T-Lock Shoe on a Channel Balance
How to Install a T-Lock Shoe on a Channel Balance
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How to Convert a Crossbow Balance to a Channel Balance
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How to install the 26-200 Screw Plug
How to install the 26-200 Screw Plug
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Modifying the Series 795 Balance
Modifying the Series 795 Balance
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Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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