Always use both hands when drawing drapes, or any window covering that utilizes a cord loop passing through a fixed component at its lowest extent. An equal amount of pull on both the ascending and descending portions of the cord loop prevents too much stress from being placed on either the headrail above or the tensioning mechanism below.
For long life, correct operation of functional window coverings is the most important factor. But they will eventually fail. When they do, ADVANCED ON-SITE provides a full compliment of drapery and shade services, including repair.
