I don't have time to view them all! I have to draw the line somewhere.
As for your dash, pretty much all of them have that dip in that spot. I've looked at mine to see why, and it's because that's where one of the screws to the dash is installed, but the dash pad is not reinforced well in that screw location, so it gets pulled down when the screw is tightened. Since you'll be pulling the dash pad off again, you'll be able to look under the pad to see what I'm talking about.
I suppose you might could heat that area and push it back up, then reinforce under the dash pad in that spot with something. I would consider Marine Tex epoxy putty for reinforcement. Then, when installing, don't tighten the screw too much. Might be a little risky with the heat and bending needed to do it that way.
Or I suppose you could just fill in the dip with some dash pad urethane filler, but that would require body work to your dash pad and repainting. Even the first method above may take some filler to make it straight, even after lifting the area.