Drivers door is saggin a bit say 1/8th inch. Any one know if the hinge pins can be changed or the entire hinge and re-alignment?

 

I had a similar problem with my 95 Voyager van. I solved it using a bottle jack under the door. Spread out the load with a piece of lumber, and be careful. One-eighth of an inch at the striker plate is a very small bend at the hinge end of the door.
If the hinge pins are worn to the point where the door is flopping around, then don't bother trying to bend the door.