Well, I can't delete it, because that causes a crash, and I can't seperate because that crashses as well.

I don't know quite how it got there, but it apparently makes a lot of commands unhappy.

Well, the front part was created via a revolution. But it's weird that is the area shoudl exhibit other curves.

The body was rail revolved.

The spurious capping plane, I don't remember from where it came from.