Have you ever seen this on your hard door?  It's the result of rust. You'll have to patch or re-skin the door.  New door skins are NOT available!  What do do? Here's the door lock/latch.  All those rods have to be straight, not bent or weak.  The slides have to be lubed.  I spray the latch with Carb spray and relube with heavy grease Remove the Torex head bolts.  this can be very difficult.  The head strips, the threads are often locked and you'll be luck to get them all out. To continue to remove the door skin, remove all the OEM "spot welds" and peal back the door skin.  This is labor intensive I wasn't lucky.  I drilled out the head and then drilled a pilot hole in the bolt shank.  Then I enlarged the hole and used an "Easy Out" to remove the remaining shank material. The easiest way to remove the outside skin is to zip it off with an pneumatic cutter.  It cuts through the door skin like butter. As you can see the hinge "floats" if   it's loosened.  The hinge tightens a plate up against the door frame.   This prevents the door from moving after tightened. Here you can see the inner workings of the door, there's the Crash bar.  Look how Window frame is constructed!