You are a classic example of the type of person I was complaining about before. If I was store and you tried to return that to me due to the "issues" you pointed out, I'd laugh in your face and tell you to take your business elsewhere.
There is nothing wrong with your endo. Normal people don't take photoshoots, add grids to the pics, and compare symmetry.
Do you not understand these are mass produced, and each one is made from hundreds of small parts....plus they're made out of plastic, a substance which is capable of warping and expanding/shrinking...add to that the different tolerances between the hundreds of individual parts, and you are left with an item that is never going to be "perfect".
If you try, you're always going to find something that isn't IDEAL.
It's called "reality", deal with it. Good lord, no wonder these collectibles get more expensive every year with all the OCD people returning stuff left and right for absolutely no reason...frankly, I'm shocked sellers/manufacturers even humor such lunacy. I'm quite sure many of the "it was their last one so I can't get a replacement" are just plain old lies from the seller because they don't want you to complain about them to the community, when they refuse to replace something that is not worth replacing.
Call me a **** if you want, I really don't care. If your piece was broken or damaged, I'd be on your side, but the only thing I even saw was a slightly misaligned shoulder flap that 99% of people would never notice...man, that's laughable. I'm pretty sure if you just fiddle with it, you could get it to even out.