"Went to the dealer and looked at the hitch that was removed and it is nothing like the picture on the DrawTite website..." Sounds like that guy got the old "bait and switcheroo" the installer sold them something else. Draw-Tite Class III Max-Frame Trailer Hitch Receiver Hitch #75113, 75154,75492 Hiddenhitch's 87404 all look the same: 4bolt pattern on the left, 2-bolt right.

If asuttie had pics of the post-mortem, then I would agree with you. Right now it seems he/she had an unscrupulous installer who gave him/her the wrong hitch.

"I also know of someone who had a Hidden Hitch and iand had problems with just a hitch mounted cargo carrier."
Your "second victim" is the same person, asuttie, saying the same story: "It is possible the the installer said they put in the Draw Tite 75113 hitch but installed the wrong product, or that Draw Tite changed the original style of the 75113 hitch..."