Thanks guys, hopefully my last truck and last trailer, and they last a long time!
Not slow at all spritz! I have a thread going under towing, about my Reese 5th wheel hitch failing and allowing the trailer to detach and fall onto the bed of my truck. I know, I know, dummy didn't hook it up right, which is always a possibility, except I did hook up right. Towed it about 60 miles to my house, never messed with the hitch or unhooking, but stopped mid-way thru a tight U-turn in my cul-de-sac. When I started to move again, the kingpin popped out of the hitch which was closed and locked with safety pin still in position. Nothing seems broken or wrong with the hitch, except it dumped my trailer onto my truck when everything looked, felt and sounded correct.