Need parts and cleaning instructions for easier opening.

Hello: The name I found on the windows in my Mother's house is: Thermal

Hello:
I just wanted to confirm that these parts are available. Yes these are the pieces I need. After cleaning the tracks on the sides the windows went up and down much easier. Only one of the four windows open and stay at a desired position the other three require a stick to hold them up. Can you tell me what part of the window mechanism is possibly damaged causing this problem.
Thanks, Wayne

Hello:

I have sent you an e-mail already regarding Thermal-gard windows my mother has on her house. I am certain that these windows are atleast 35 years old. I have attached 2 photos, one of the pivot bar (bottom.JPG) which is plastic on the bottom of the window. I am sure my windows have the same spring loaded long pivot bar on both sides. It makes sense though that only one has to be spring loaded and move in and out. Please confirm this is the case or I should use both spring loaded. Can I purchase the spring that is used to actuate the pivot bar. The ones that are broken do not move so I am assuming the spring fell out. I also need the screw that holds the cover over the bar in place.

The second photo is the pivot that appears to be part 15-070 that is indicated as related to the other parts that I need. I am not sure if you need me to removed the pivot and clean it off and photograph and measure it to be certain.

Can you please give me the part number of the pieces that I have mentioned (springs & screws included) I would like to order what I need.

Thanks inadvance for your help, Wayne