Grinding noise
 

I have a Kenmore Elite Ultra Wash dishwasher (model 665.16579) that makes a grinding noise when in the wash cycle. I have replaced the pump motor assembly (part W10239404) which did appear to have a bad bearing and the part that fits into the grinder assembly was chewed up. I have taken apart the drain pump assembly and it looks good with no signs of wear or debris. I have taken apart and cleaned the inside down to the grinder and everyting looks fine no debris. I even took out the check valve and cleaned around it. I still have the noise. It appears to be the loudest in the smart cycle.