Replaced washer drive block and Cam. I called around and finally settled on Appliance Parts Pros because they helped diagnose the problem, told me what parts to replace and had videos to show me how to do it. In completing the repair I had to remove quite a few pieces of hardware in order to get at the part I was to replace. The videos helped but there is a learning curve while you familiarize yourself with the parts and figure out how the remove them.
Eventually I got to a large nut that, according to the video, needed a spanner wrench to remove. I didn't have the wrench but improvised with a large locking vice grip which worked fine. At this point everything was going well until I started removing the inner drum. It wouldn't budge. Frankly, the video didn't prepare me for the difficulty I would have in removing it.
I searched around the internet and discovered this is a relatively common problem. Apparently soap and other stuff works it's way onto the shaft and over time solidifies and essentially glues the drum to the drive shaft. There were a lot of opinions online but what worked for me was a spray to free rusted parts - multiple applications - boiling water poured around the rim of the shaft and then finally pulling, shaking from side to side and pulling at the same time until it finally released.
Other than the problem removing the inner drum the installation of the parts I ordered was pretty easy. The one thing I picked up somewhere online was a guy who said that if you think you're doing something wrong - you're not. It will eventually release. He was right. After all the time trying to remove the drum those few words gave me the encouragement to keep trying.