Thank you so much for your replies! It’s working perfectly now.
It turned out it was just that angle needing to be straightened out.


I turned off auto merge and slid the outermost vert (if you select all of them edge slide gets all wonky) up and then turned on increment snapping in order to get it lined up in the center. And then I just made sure everything else was aligned by scaling to 0 on their respective axes or by using vertex snapping.
