need help

Hi Swisco,
 
I am a homeowner trying to replace both channel balances on a non-tilt window. All of my knowledge has come from researching online and removing balances on a working window and its twin that is not working.  I was looking at your website and did not see any channel balances with the same type of balance shoe/bottom guide. Perhaps one of the styles shown would work just as well. Please let me know the balances I need to order. I have attached 15 photos to assist you in identifying the correct balance. If you need higher quality photos for the non-close ups let me know. I wanted to send you everything in one email and had to reduce the size of each image.  Here is some additional information:
 
Non-Tilt Window
Balances Stamped "86A  27-5  AA2  CMC  7" (See attached photo. "8" could b a "B")
The window weighs 24 pounds.
The overall outside length from the top of the top guide to the tip of the bottom guide is 29"
The channel is 1/2" Wide
The Bottom Guide's Length is approximately 1 7/8" from tip to tip
The Top Sash Guide's Length is approximately 1 1/2" from tip to tip
The metal piece of the guide appears to have an approximate length of 27 15/16" in total. This is from the bottom edge of the metal to the top edge of the metal without accounting for the top and bottom guides which overlap the metal piece. (From what I saw on ChatGPT, the "27-5" stamp indicates this should be a 27" channel balance, but I have no idea where they are measuring from to get that figure. The actual metal piece is longer than 27" and the total outside length with the plastic top and bottom guides attached is 29" as stated above.)
 
Again, please let me know the item and part number I need to order. I will need two.