Vinny Feldman

Hello, I'm looking for some help configuring vertical resolution (4:3 LCD turned 90 degrees clockwise). I managed to flip everything 90 degrees with "display_rol yes" but there are some black bars at top and bottom of the screen. Would love some help if you have the chance. How do I make the resolution fill the whole screen? Do I need to change the resolution? Or is there a way to stretch it a bit to fill the two black bars/gaps? I've attached a photo that shows exactly how it looks right now.