Yup, you got it figured out. Now, when you hook up to your truck and all the load is on the pin, check the area around the black trim molding in pics 2,3,&4. Draw a line against the fiberglass along the molding with an erasable marker. Then hook it up and take note of any movement between the line and molding and measure it. If it's more than a quarter inch there might be an issue. Actually, either way, I would have a dealer check it out.
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"PT Crew Members Since 9/2010"
2011 RAM 2500 HD 6.7L CTD Crew
2014 Prime Time Sanibel 3250