New water pump 6 impellers whats up with that!

Sorry I never got pics up yet comparing the 2 I have. The batteries died in my camera and then I came down with a real nasty cold so I just haven't been able to get around to it. I'll try to get them tomorrow. I'm interested to hear what bohica says about that much gap. I've always liked to see them have no more than 1/8" gap.

5th did you take account for the thickness of the gasket when you came up with .322?