Ok, so now I need some suggestions. I got the replacement pump locally, same model. Installed everything and I've got a leak between the motor and motor mount plate. There was no rubber seal between these two on the old, so I didn't add anything on the new. The leak is pretty significant, though.

Also, I did replace all the rubber gaskets involved, and actually replaced the mount plate because I accidentally screwed the motor bolts through the original one . The leak is not coming from the large disk halves that connect with the big metal band, but rather from behind the motor mount plate.

I was very careful with the ceramic seal, and did not touch the ceramic its-self at all as I read all over the place that you should not. I did not put any lube on it, as the pamphlet with the seal said not to put anything containing PFC on it (and the lube I've been able to find proudly boasts PFC on the front).

Suggestions? After busting the rather expensive (locally) mount plate, I'm getting a little gun shy and thinking of calling someone to finish this up right for me...