Counterintuitive indeed. I'm going out there now as the shade has come around. Wife's asleep and son is at Grandma's. A good time to work on the car. I'm going to leave the IP installed and rotate the crank both ways. Then I will R&R the pump in the opposite direction one notch. Unless it turns out that it's way off, then I'll go 2. I knew I should have left the radiator out!