This is the first I've heard of a hood not fitting.
The nature of a press fit design requires a precise fit, so I am a bit concerned if the prints are now arriving with incorrect dimensions.
I don't believe there is any post polishing dome, or at least there shouldn't be for this model. A lens hood does not work so well if it is shiny. Looking through the order history, it appears you did not receive a polished finish, so the fit should be fine.
Since this is the first I've heard of press fit problems, I'm unsure what to do. If you can be patient I will contact Shapeways and see I there is anything that can be done.