[hoseman]

Originally Posted by silvertoken

Check out this article: http://www.doityourself.com/stry/how...-door-problems

Good post that covers the problem.

Tighten all the door hinge/handle screws before any further troubleshooting.

(Not wild about the cardboard suggestion - plain ole newspaper should provide sufficient witness to the problem. I'd drape a newspaper around the open door frame - close the door and see what paper easily slides out - paper that's stuck is where attention is needed).