I can't tell if a head fin is just bent or the heads are loose. I'd check the circled area out.
I think what you're seeing is simply camera angle. I just had a (failed) experiment in trying to photograph a part against a rule to explain dimensions of a part I'm trying to get 3D printed. No matter what I did, I couldn't get the correct dimension to show up in the photographs. The camera exaggerated every error 2-3 times.