The centred text has gotta be an issue since it's not aligned perfectly, so... the solution would be to get it to line up right. The pixel snap shader /should/ have done this, but I guess I still have more to figure out with that. It might also be possible to align it to the grid inside of STM's code, but that feels like a bit of a clunky solution to me.
I'll give the shader another shot soon! I really hope I can get it working right.