fluval 303 impeller problems

FASTRAKR

AC Members
I bought a used 303 the other day that the seller said needed a new impeller. So, I went and bought a new impeller and it still doesn't work. The impeller seems to fit reallt tight in the well (won't turn by hand) and when plugged in there is a magnetic field inside the well ( stuck pliers in and it was pulling them). Any suggestions? Is it something I am doing or is this thing pooched?
 
There may be build up in the chamber. Take a flaslight and look in it. You could also try to buff the cylinder out with a dremel and a really fine grit paper. You just don't want to oval that cylinder because you'll never get it to work right at all...but what the heck..it doesn't work now.
 
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