Harcar window fix recommendations

A quick learner from north fort myers, fl 33917 says:
Harcar windows won't open or close easily. (especially close)

How to fix them without replacing them?
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Tom from SWISCO responded:
If the windows won't close or open easily, then there's likely a problem with the window balance.
I see you were looking at our S373-35. Is that what you have? If not, can I see a few pictures of the balances in question? That will help us determine what you need.
Check out the video below to see how you can remove them from the window.
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