because of the hassles and costs, .................................. You can just pin down what I will just call because I don't know how it is called the tonque of the doorknob on the side of the door right beside the doorknob. Remove or unscrew what I will just call the metal guard where the tonque is attached when closing. In the middle of it is what I will just call a flap, hammer it and flatten, everything must  be flat.... Then remove or uncrew the two screws on the side of the doorknob. Afterwards attach the metal guard on the same hole where the first screw was removed. The flap of the metal guard will pin down the tonque so it will no longer get in the way of closing and opening of the doorknob. You can also make a hole to screw the second hole of the metal guard on the side of the door. You can just then use the doorlock to close your door.......