I should also add that your observation is entirely correct: "MOST novices fail to see the screws that hold thru the existing holes on the bottom."
That's me!! I thought I had unscrewed all of the screws. I tugged on the ADB -- not too hard -- and it would not budge. When I was younger, I would have tugged harder and would have broken the plastic. (My nickname within the family is "Twisto the Great," as in "he thinks that more force is the answer to everything.")
Equipped with the wisdom of age (stemming from many prior disasters), I went back to the manual to see if there might be any hidden screws that I had overlooked. Yes, there were two of them. Problem solved, and no plastic was harmed.
