Milgard single hung

A quick learner from Albuquerque NM says:
August 12, 2017
Single hung/ thermopane (36"x60")is hard to open an hard to close. Balances ( 24-9 KE5 CMC 45 ) are clean an in good condition. Vinyl jams are in good condition. My wife can barely open but can not close them. Any suggestions would be appreciated.
Thanks Dwayne
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Tom from SWISCO responded:
August 16, 2017
You could try lubricating the track with silicone spray, that might help. If not, then the springs may be shot, which would mean you need new channel balances.
33" Series 385 Channel Balance
33" Series 385 Channel Balance
S385-33
$11.52
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