Door adjustment

[Claude]

The 411 is now running, taking short drives on our rural roads to begin sorting it out.

One problem never fixed was the misalignment of the driver's door. It drops, so when it closes, it has to use the latch to bump upward which over time promises to destroy something. The phillips screws for the door hinges are chewed up, so I do not want to start loosening them until I know what will work.

a) Can I adjust the door by loosening the screws, raising the door to the right height and tightening them, or
b) Do I need to remove and replace the pins and if so, how? And are the pins common, or something I need to source from Bristol in England (I am in NZ and would like to do this over the Christmas holiday when the world of commerce and international shipping closes).
c) Do the hinges need to come off, and if so is this straight forward or is there some trick to it?
d) Anyone know what size and hardness the phillips screws are? It might be a good time to replace them.

Claude