This is something I noticed on the lots when I was looking . I made sure my frame looked good and at 1500 miles still rust free , it has a nice even coating and looks like new everywhere i can see. I would feel the same as you do and I passed on a couple of trucks just because of this. Mine is also a crew cab made in mexico. When is your manufacture date? Must be something different in the recess or I just got lucky I guess. or maybe the rust gremlins will get me in the future who knows but I must say it made the trucks look old to me.