Shim the door adjusting when you go until eventually The entire device is plumb and centered. Then shim the highest in the door. When you are done, The complete unit need to be plumb and swinging adequately. Given that the door is in position, check the swing of your door. https://www.whofish.org/Default.aspx?tabid=45&modid=379&action=detail&itemid=288572&rCode=20