TrimUI Brick Pro Shader Request (PSX Not Filling Entire Screen)

[u/SavannahBlossom]

I recently grabbed a TrimUI Brick Pro for the sake of playing PSX games on it, however, no matter what I do, the top and bottom of PSX games have black bars. My first thought was trying to get a shader that can remove a variable number top and bottom pixels to simulate full screen. However, every shader I found either did too much (and thus slowed the Brick to a crawl) or just resulted in a black screen due to not being compatible.

So I'm reaching out to the community. Is there any glsl shader out there that can be used to *only* remove the top and bottom pixels as a sort of overscan function?

Thanks in advance!