SDF Robo Progress Bars

Maybe this is a stupid question, but can I make the bars wider without stretching them out? Or is there a limitation from an underlying texture?

This is what the bar looks like in the material instance preview window:

If I make it the size I want in my UI widget, it’s all stretched out:

Notice the slope is also different after being scaled, and the edges are pixelated.

Is there a way to just extend a bar (obviously adding more divisions) to be wider? I tried messing with the ShapeScaleX but I’m obviously missing something.