Fordsandguns
Fords Rule
The absolute best remedy is to remove the whole mess, heater and all, and replace it with a standard IN-and-OUT filter-head that takes a better performing three-dollar filter.
I doubt that wimpy little heater with it's puny little wires adds over two degrees to the fuel temperature anyway.
Do you have p/n's for the head and filters that have a better micron rating and proper flow rates? That are cheaper?