Need help locating replacement balances for my 1994 Viking vinyl windows

A home owner from Northern Colorado says:
Need help locating replacement balances for my Viking windows. I need replacement for three different window sizes. There are numbers stamped on the back of the aluminum rails: 1. 1410, this is for a 34 1/2" X 16 1/2" window, the aluminum rail is 15" in length. 2. 2630, this is for a 58 1/2" X 34 1/2" window, the aluminum rail is 27" in length. 3. 2740, this is for a 58 1/2" X 46 1/2" window, the aluminum rail is 28" in length.

The only codes I can read stamped between the panes of glass is a date, NOV 01, 1994.
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Bob from SWISCO responded:

Thanks for posting. These all appear to be Series 395 Channel Balances. You'll need the S395-15 with a stamp option of 1410, the S395-27 with a stamp option of 2630, and the S395-28 with a stamp option of 2740. Let us know if you have any questions. 

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