Thanks to help from the videos, I disassembled the unit down to the chopper water basin. There was a lot of plastic, ceramic and food stuff to clean out. I inspected the old chopper, and it looked fine. So, I only replaced the sprayarm bearing, put it back together and ran the washer. It seems to be working great again! I did this over a couple of times taking it apart and went pretty slowly, because it was my first time. But everything is pretty obvious and I could do the whole thing a lot quicker next time. Make sure you pay attention at how the chopper comes out so you can understand where it fits back in!