I just installed new hardware on the front door of my home. However, now when I close the door it does not close flush against the door seal. At night, I can see light from my porch light coming in around the door. How can I fix this? It's as if the new latch and strike plate are not tight enough to have the door close all the way. It latches shut, just not tightly against the door seals. Winter is coming and it will be like leaving a window open! Any suggestions would be great. Thanks!