Segments of radial health bar clipping each other?

I am trying to create a radial health bar (using this tutorial), everything is fine except for 2 parts of the circle are clipping and creating a weird line. Example:
image
You can see that there is a thin line on the right of the health bar

Why does this happen? I’ve tried resizing the segments so they don’t clip but if I align them they form this line.
Each segment is 250x250 and there are 3 segments within the health bar.
Images of each segment (made in Paint.net)
image image image

Image of the overlay:
image

They are not the same preview sizes because of how I screenshotted them.