In this first image you can see how the ramp looks all weird.
It’s because, even though the cut loops occupy the same space, one is “right” and one is “left”. Selecting first gives me the one on the left, so if I pull it rightwards, it goes over the right one, which results in this visual artifact.
My solution was to Grab, constraint to X, try left and right, and see towards which side the movement did not produce artifacts. Took me a little while to figure it out - maybe you’ve encountered this as well.
The second image looks fine, but can’t upload because I am a new user and the forum won’t let me.