Well, I found two issues. The Accumulator was leaking and has been replaced. Checked the bottom of the EHA, and it was wet with fuel. New "O" rings (green) had been installed so they were not suspect. So it was leaking and has been replaced. No more leaks.

I tried to find a fitting in the pressure gauge kit that would let me tie it to the supply hose to the FD. As I understand the system, pressure from the FP to the FD should be the same whither the supply is connected to the FD or not. Am I missing something? It would seem to me that using the press gauge connected to read the differential pressure would read FP pressure. Am I missing something?