Milgard balancers

A handy person from Commerce City, Colorado says:
August 30, 2020
What a great site! Hopefully you can help me. I suspect one of the balancers has been replaced before. One is stronger than the other and the window needs to be giggled side to side to get it moving upward. The window weighs 30 lbs. These are the numbers on the balancers. Left- 32 5 FW CMC 10. Right- 32 3 GW CMC 7. I believe they most closely resemble your S 385.
Profile picture of Tom
Tom from SWISCO responded:
September 2, 2020

That's definitely no good. Both balances should be totally symmetrical. I guess someone tried to repair your window in the past and put the wrong part in; it happens all the time.

Fortunately, your given sash weight solves the mystery before it even began. You want the 3250 option, which is a match for your old 32-5 stamp; two balances with a 3250 option can carry 28 through 30 pounds. 

You can see a weight breakdown chart on the S385-33 store page to see what I mean.
A handy person from Commerce City, Colorado says:
September 3, 2020
Thanks Tom, I'll place my order! Bill
Channel Balance Top, Winged
Channel Balance Top, Winged
19-005
$0.74
33" Series 385 Channel Balance
33" Series 385 Channel Balance
S385-33
$11.52
How to Replace a Channel Balance Attachment
How to Replace a Channel Balance Attachment
VIDEO
WATCH >
How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
GUIDE
READ >
How to replace a non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
Choosing a Non-tilt Channel Balance: What Will We Need?
Choosing a Non-tilt Channel Balance: What Will We Need?
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.