I hate to be the bearer of bad news but, you've now got a tapered gap between the door and the bezel the size of your aluminum plate. To remove the taper, you're going to need to drill out the rivets and cut reliefs in the aluminum where those braces are. This will also screw up your door fix but it is the proper way to fix the problem you have.

Having done a few case mods like this, it's better if you install the new panel with the case fully assembled and mark all areas where the bezel protrudes through the front panel of the case . Here are a couple of pics from my current build where I've had to do the same thing for reference.