Regency Window balance replacment parts

A handy person from Simi Valley, Ca says:
August 17, 2012
Hello I got your company name from my brother in law as you helped him get fix it parts for his window. I am in need of 2 new Non Tilt Block and Tackle Window Balance for my windows. Both of my balances have broken and I can not find parts around here. The balance dimensions are as follows

length - 26" inches
Width 5/8"
window is about 31 lbs.
top plastic retainer is about 5/8" above metal

and the window manufacturer is Regency Windows. Please help I can get the window to sit right and so I cant run my air. I also need the channel release clips for both sides.
A customer submitted image of channel balance attachments.
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Tom from SWISCO responded:
August 17, 2012
Thanks for posting. Before I can confirm what Series channel balance you have, I'll have to figure out what your bottom shoe is. Please look at the measurements for our 15-001 and 15-002 bottom shoes and note their depths. As you can see, they are 1-1/8" deep and 1" deep, respectively. Which measurement more closely resembles your own shoe?
A handy person from Simi Valley says:
August 17, 2012
How Tom thanks for the response. Looks like the measurement is 1 1/8".
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Tom from SWISCO responded:
August 17, 2012
Thank you! In that case, I recommend that you look at our S390-26. Does that look about right?
A handy person from Simi Valley says:
August 17, 2012
That should work. I think the 15-001 shoe looked correct. Also what option should i chose for the balance. Is the option according to weight. I just need to know the option to chose for a 31 pound window
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Tom from SWISCO responded:
August 21, 2012
Glad to hear that our Series 390 looks good. Now, you say your window sash is 31 pounds. Order the S390-26 with the 2565 stamp option, which can support 30 through 33 pounds.

Please keep in mind that the above weight range information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
Channel Balance Shoe, 1-1/8" Depth
Channel Balance Shoe, 1-1/8" Depth
15-001
$0.74
Channel Balance Shoe, 1" Depth
Channel Balance Shoe, 1" Depth
15-002
$0.74
26" Series 390 Channel Balance
26" Series 390 Channel Balance
S390-26
$10.55
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