Appliance Parts Pro had a great video showing what the most likely problem was and how to fix it. Using the video, I disassembled the washer and removed the suspect part (Spider Arm), which I found to be cracked. I order the needed parts on a Thursday afternoon and had the parts in hand on Saturday afternoon. Reassembly was straightforward and the washer now works like new. The most difficult part is the manhandling of the drum out and back into the washer. It is heavy and awkward for one person. All told, I probably spent about 6-hours on the project. There are a lot of steps involved. Quick service and a great video made it possible for me to do the repair.