Also Lang, a few things I noticed...

Nice shape, by the way!

When I ran a Fillet on the edges of those subtracted ares it looked bad.
I looked at the control points on the network and they seemed fine but were not as consistent as you might would desire.

I rebuilt the shape with Sweep by using the two side profiles as Rails. I first did a Rebuild on those rails and the resultant Sweep shape was very clean looking. Try it out.