Removing border from detached preview window

So I recently got an old Apple II monitor and have been using it as a preview window for aseprite. I am trying to get the bars removed from the edges so I can just have the art displaying full screen. I’ve done alot of googling and it appears there just really isn’t a way to do this natively in aseprite. I’ve resorted to using autohotkey. I was able to get the borders outside of the monitors frame using the “WinMove” command but that broke panning no matter what I did. The art would butt up to the edges of the border. I ended up using “WinSetRegion” to just crop off the edges so it would at least render the art cleanly on a black background (I primarily do 1Bit art). This is working but I lose a lot of art real estate. Especially at the top. I’m at the point now where I know I have to be over engineering this. Is there a simpler solution to this problem that I am missing?