I have the missions to go to the Fort. I have the Caesar's Mark in my inventory that makes them supposedly friendly, and it says I'm neutral. Yet, they all try to shoot me whenever I approach that Cove to cross the river? I put on Legion armor and I was able to get to the fort, but when ever I get close to a dog they all attack me. They also attack me when I went into the arena. I can't go talk to Caesar because when I enter his tent there's a dog right there and they all attack me.
I lost Boone when I went into the lucky 38.
When you come across the Legions in that town after they killed everyone, I said I'd spread the word or whatever, then as they were walking away I killed them all. I have that leader guys animal helmet in my inventory. But even so, I thought the mark was suppose to make them all friendly.

Is this fixable? Like maybe get a new companion or ditch the helmet? Or am I gonna have to side with the NCR and just mow them all down?