The allen head/hex nuts on the bottom of the Baiardo base clamps? Yeah, those puppies are on there tight. First, I doubled up a thick towel over the rectangular piece. Then I secured the rectangular piece with a pair of locking pliers (with the towel in between to protect the metal on the rectangular piece). Finally, holding the locking pliers with one hand, I used the other hand to loosen the allen head nuts with a long allen wrench. Not ideal, but I got them to break loose.