Ok, let me do this over!

I am going to simply measure the main line's fuel pressure, you guys tell me if those readings are ok and what to do next.



This time I am measuring the line itself

Overview:
Setup


Bleeding container and other environmentally sensitive stuff


Where to connect


Connection


Let it rip: Where and how to bypass the fuel pump relay to get the pump pumping
Short these two connectors


The red and black wires are connected together on their other ends.


Bleed the instrument


No more bubbles


Read instrument


Shut the pump by disconnecting the short (remove the wires)
then read again


Please submit your observations and analysis before I proceed any further. Also do submit any future steps I should take based on this result.