@InterceptorMad: I read what you wrote about how the CR-90 used it's crippled rear to block shots, but was then firing back. You know you can't fire the main gun through it's rear section, right? So, you can't use the rear to block shots and then fire through it. I'm not sure if that's what you were doing, but just wanted to throw that out there.
No no, you misunderstand. He was using his movement options, initiative and wrecked aft section to literally block my Raider's MOVEMENT. And so I kept colliding with him no matter how I tried to turn, and so I kept gaining crits for colliding with him, but as his rear was wrecked already, he wasn't getting any penalties. We were sure that it must be wrong in some way, but we were sure we were playing the rules correctly.