I find many questions be asked about window treatments, shades operation and within COM_NET there are many links to all this information.
To get to information you enter
COM_NET and go to the
Technical Information block and in that link select
Interior, than select
Window Treatment.
You will have a full page of information old manuals and new ones and different type of shades and how to order parts from MFG's and trouble shooting problems.
You should not have to sign in to COM_NET all my links are already active.