I had that thought last night. I added an extra washer just to see, and no change. I'm starting to think the weight of the door coming down on the strike post is something to look at.
For some reason, the rotating catch just isn't rotating back around enough to come off the strike post. So, there must be some downward force restricting it.
Like I said earlier, just when the door is open, the rotating catch in the door mechanism opens easily when I pull the door handle. So, I know it moves freely and completely. The strike post must be stopping it from rotating all the way back open.
