Help, newly installed Pre hung exterior door hard to open/close
We just had a pre hung exterior door installed recently. Everything looks OK except the door is very hard to close or open. It looks like there isn't enough room between weather strip under the bottom of the door and the sill ( all come together as one piece). The upper hinge has two 2" screws screwed into the door jamb. But it looks like that the gap between the door and its frame is larger near upper hinge area than what is near the mid or lower hinges.
I understand it is one of the common problem of installing new door, but I have never seen anyone is able to pinpoint to what exactly the cause of this problem and tell how to fix it.
I would appreciate experts here to provide solution to the problem.