Tail Gate Removal

[swissarmychainsaw]

I know, this sounds like a dumb question, but I can't get the tailgate off.

Every truck I have owned, you simply do this:
* Remove the hangers
* Tilt Gate to about 45 degrees
* On the right side, pull towards you (which pulls out the camed "hinge")
* Then pull out the left side perpendicular to the truck.
Voila.

My 1975 Gentleman Jim, won't give it up.

I can look at the right side "hinge-pivot" and see that it's "C" shaped, but the male part (very hard to see) does not seem to be camed, or more flat on the sides than round.

The truck has been repainted. Can you even put the pivot-hinge things on the wrong sides?

What the heck am I missing???
thanks! (happy thanksgiving!)
Nick