Having created this geometry I messed something up, and now I can’t get the right side to match the left. A subsurf modifier showed something was wrong.
The only place I can see any difference between the right and left are these vertices
Iv’e battled for a while trying to resolve this - I’ve tried deleting the face and re-filling it, deleting it and duplicating the one on the left, deleting the edge and duplicating the left…
I deleted the right half of the geometry and tried to duplicate and position it but that wasn’t working. Also tried to mirror it. It creates a mirror but I can’t get the two to join.
The problem I think stems from the central join between the left and right, as initially it was created by a mirror modifier, which left a slight gap that I thought I had resolved by joining individual vertices (in retrospect I knew that was a bad idea, I just didn’t have the know-how to join them correctly).
Thinking the joining issue (with a mirror mod) might work I tried subdividing along the inner edge of the left side, but the line doesn’t go all the way around and I don’t think that selecting it all manually will work when it comes to snapping the two pieces together.
I’d really like to resolve this challenge (and maybe gain experience) instead of starting over.