When I searched online describing my problem, I was taken to the AppliancePartsPros.com website. I knew the switch that controls the water spots worked when I held it steady in place. So, the problem was identified on the website as the Bracket which I ordered for approximately $15 and shipping was $6. The site included a video on how to remove the old bracket and install the new.
The part arrived in three days as predicted and, after watching the video several times, I was able to complete repairs within 45 minutes. Since this was during the coronavirus "stay at home" order we were delighted to have our filtered water source repaired without needing a "technician " to come to our house. I highly recommend the service by ApplianceParts Pros to everyone.