wolf_rt wrote:
you sure theres not just a flat plate for a regular tongue under there???

Thanks, wolf_rt, I appreciate it. Makes perfect sense to me now! As you can see, I am an amateur with tow bars.
Hopefully somebody else will locate this thread to solve their problem.
I'm certain you are correct, but I'm unable to get to my zook for a few more days to find out. I just needed to research it all before making a purchase.
Cheers.