Wait,
You said it is a Mobil One Filter? If so that is definitely not the problem. The Mobil One filters actually flow better than either Fram or Motorcraft does.
If you have a normal
oil pump as opposed to a high volume pump then the numbers you are quoting are well, normal. If you have a high volume pump, then they would be low.
But you know that.
I hate the say this but I would guess that you have something in the pick-up screen in the pan. If you were heavy on the cam lube it may be the culprit. I have seen (personally) that if the Lubriplate is too heavy on the in build that it will get in and in some cases (mine) restrict the
oil from being picked up through the pick-up screen.
I hope that isn't the case, it is a pain to take it all apart again to clean out. I had to do it and the pressure went back to normal.
I have been told that just driving the car will help to break down the cam lube but it did not work for me, because it was not circulating in the system. It had just stopped on the pick-up screen and in the pick-up tube. If it gets in none-circulating places it will harden and never dissolve.