Hitachi seems to be one of the last routers that manufacturers pre-drill for. I have an M12V and an M12V2 and the bolt patterns aren't even close and I wouldn't be surprised if both of them are different from yours. I always assume I'll have to drill my own holes. On the home page there is a thread about doing your own plate.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.