I have driven the car on the open road several times now. There is a slow leak at the 8190 fuel pressure regulator. The outlet port that is blocked has a slow leak. So I have replaced the 3/8" npt fitting that came with the 8190 with a different style of fitting. It is a 3/8" npt plug that has an 11/16 size bolt head. I have done a couple of engine starts/runs to check for further leaks, and so far its not leaking. Will continue to monitor.