I'm going to guess that those edges have something to do with the cutouts. It's hard to tell without the part file. If you delete or undo the cutouts, those ridges will probably go away. Not sure what you're trying to accomplish here. Maybe a Thin Wall feature will help.
Also, I'd probably suggest that you make things like loft features in Ordered. I usually suggest people try Synchronous, but for features like the loft, they can't be edited in Synchronous.
One cool thing you can do is put the sketches in Synchronous with the Loft in Ordered.
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