okay watched a lot a videos before i began taking the pump apart. everthing was fine until i got to the impeller. every video said the hold the back of shaft with screwdiver and twist the impeller counterclock wise, well nothing was happening. so i had to break it off, and to my suprise there were no threading on the shaft rod, looks like that impeller was a permanant fixture in the pump. so my question is has anybody every seen a pump like this. where as if something go wrong u just have to replace the whole pump. don't know if it's a waterway of millennium because both names on on the pump.