Got the Aagaard pump kit. Installed and everything works as it should, awesome!! The kit came with a Quantum regulator which I had already replaced, so I now have a spare. Just a bit of food for thought but the bad pump was a Quantum, not judging just reporting. Not sure what the take away from all of this is. I guess to do the troubleshooting necessary to condense the problem down to the the most obvious cause. Big THANK YOU to Rays and Barrett for all the t/s'ing help. You guys are the best.