I seem to recall hearing that one of the track sections for either Mantis or Raptor was incorrectly fabricated and had to be rebuilt. Now I have no way of knowing if this is true or not, but if true, I think it would serve to demonstrate how Cedar Point and its contractors can usually react to such a problem. While Raptor did not operate on its opening day, the ride was complete and ready to go (and had operated, and had been inspected by the State inspectors) on opening day 1994. If the rumored problem was for Mantis:TCFKAB (again, I don't remember which one it was) then I can verify that the ride operated on its scheduled opening day because I rode it that day in the snow, along with everyone else.
It has been reported that Cedar Point is scheduled to do some presentation at COSI Toledo on March 25. I don't know the exact construction schedule, but problems or no problems, I expect that by the time that date rolls around, Millennium Force will have operated at least once.
--Dave Althoff, Jr.