Is that fuel filter a Fram or a chinese clone of the Fram? If so does it have a paper element in it? If so change it to a 100 micron or larger element.
The paper fuel filter elements are all 10 micron or smaller which really limits the fuel flow through them when sucking the fuel from the tank to the pump, I learned that lesson the hard way once
Install it in front of pump going to the carb or fuel pressure regulator and use a 100 micron or larger filter between the pump and tank