It appears that the hole doesn't go all the way through,
due to the fact that the hole is drilled straight through the rounded part of the pawl, but emerges at an angle from the flat side (resulting in an elongated exit hole.) For some odd reason, it also took me a while to realize this. In addition, one of the holes may be filled in with crud.
Be sure to note the orientation of the key slot/lock cylinder in relationship to the pawl. Once you do get the pawl off, you'll note that the pin passes through a slotted region of the cylinder, not just a hole in the cylinder.
Due to improperly putting these back together a time or two, I eventually realized the purpose and reasoning behind the design. And also the wisdom of documenting how it came apart!
I fixed and changed the locks on my X, and it all works much better now. I found that the biggest problem was removing the small plastic pivots that hold the ball swivels, or something like that.
Good luck!