i just want to take the time and thank all of my mfk family that advised me on getting a new impeller it worked perfectly ! it is as silent as it has ever been. thanks again
5:56 pm OP says , "Thanks for the help, problem is fixed." Then awhile later you make you suggestion of trashing it. It helps when you read all the posts before you reply.
OP I'm glad your 400 is running good again. I love mine and have had no issues...