The fuel pump will be fairly forgiving of dirt and there (should be) a screen in the pickup tube to protect the pump from large crap. Just take one filter and throw it away, and move the other to after the pump.

What's happening here (most likely) is that the fuel is boiling in a vacuum, not due to heat. There's only atmospheric pressure, on the suction side of the pump, to push the fuel through the filters. Each filter will have a pressure drop that increases with flow. Under high load conditions the flow will be the greatest. The vapor pressure of gasoline is somewhere between 6.5 to 8.5 psi. Note that 1 atmosphere is 14.5 psi. So, your pump is probably pulling the absolute pressure in the fuel line below this vapor pressure, boiling the fuel. Removing the filters will give you the most pressure at the pump suction.

If you wanna read up on this, search for the term "npsh".