Hot damn! Got the watermaker working. Made 28 gallons of fresh RO drinking water from Yaquina Bay water yesterday. My previous problems were caused by a sticky check valve inside the Clark pump, which the tech guy at Spectra explained how to fix, and a “my bad” on my installation. I tee’d the salt water feed to the hand pump as well as to the watermaker. This is a no-no because it gives the watermaker pump a dandy little spot to suck air. And, if you know anything about centrifugal pumps, you know they don’t like air. Took care of that, and simplified the fresh water flush plumbing a little and she was ready to go. Ran flawlessly for 4 hours at which time we noticed a drip from the faucet in the head as well as the one in the galley. Took this as a sign that the tank was full and shut the system down. So I’m encouraged.