172 door hinges: right way, wrong way, my way???

I was walking around the old girl yesterday and the doors were hanging open to make sure all the moisture from the leaks (stand-by
for post on cabin leaks)....so anyway, something made me grab the bottom of the door and check sop in the hinges. Maybe it was
because I am thinking of taking them off to replace the seals someday to slow down the wind blowing through.

Anyway, I pull up on the back of the door and the bottom 1/2 of the hinge pins falls down a 1/4". Hmmm.

The top hinge pins look stock, but the lowers look like a piece of coat hanger. Not even tractor pins like the rentals!

What do you use for pins material?

Mike Z