Start button image misaligned

[nnhughes]

Hi all,
I'm trying to have png image as my start button icon but it places it vertically misaligned over the (Windows 11) start button.

I experimented and found that if the image height is increased it pushes it up. The screenshot above is for an image with an aspect ratio with the height over twice the width (adding more black background below the button image I want). I did get it looking right by increasing the height further to 4 times the width but now when the start button is pressed it seems to momentarily disappear (I'm guessing because its vertical alignment is changed when the button is pressed and what is seen is the black background). Has anybody else experienced this or have ideas of how to have it correctly aligned?