When the MK3 jogs after a change it will spit out another inch, so I follow it with paper until it starts to move back down. Doing this has given great, repeatable results.
The original file isn't quite right. If you look at the narrow end of the oval it pinches in and isn't round, outside white ring is wider on the left vs the right. Fidelity loss on export maybe? Can see the infill through the top color depending on the type of blue you use.