I disconnected my fuel line at the pump outlet to conduct a fuel pressure test. It tested good (about 4 psi) but now that the line is reconnected there is a leak. I believe the problem is on the pump side of the fitting, not the flared tube end, because I have swapped the flared tube connector with the one that was at the carburetor inlet, and the leak stayed at the pump end. What can I do? I sure don't want to replace the pump again, as that was a real PITA last time.