Cab corner massaging opinions needed

[mjensen]

So, I'm spending hours making sure this cab corner fits like a glove prior to my first weld, but I need opinions about how to fix the area around the door opening as well as how it fits with the rocker. As you can see from the pics, the rear of the cab fits very well so I can't just push it back (or maybe I can). I could probably live with the line between the rocker and cab corner because it's not as bad in person as it looks in the photo. Please let me know how you masters would fix this.