Well, I didnt order a shurflow pump, I ordered an exact replacement except the new flojet will have a mini-strainer. I did that because the room in the pump cabinet is tight and plug and play is a nice thought. So, with the existing flojet I decided to take it apart to see what was wrong. There was a ton of white plastic chips that look like they were from a hole saw. I cleaned out the diaphragms and seats. I also removed the fresh water low point valve to clean it out and left it out during thorough tank rinsing. I felt pretty good about all of that and then tested the operation of the cleaned pump and tank... It started repeat cycling Again
. Then I remembered that someone said they turned on all of the taps, showers, etc. and ran the pump to clear it out. It WORKED. Pump is working again. Life is good.