I managed to get the screen looking a little bit better in the corners. After having a closer look, it turns out the clear plastic screen behind the blue filter was filthy on the edges and after a cleaning, the CRT still isn't sharp overall but the corners are much improved. While taking the front bezel off, I also managed to snap one of the knobs under the CRT by being a cavalier and just pulling on the knob (oops). I used a little bit of heat on the rest of them and didn't have any issues. Lesson learned. Any one have a spare knob or 2? haha.
Jay