Rob,
I have inspected and cleaned the mating surface and put a thin layer of oil on the gasket before installing. I have used Fleetguard filters and the last one didn’t leak. I plan to order a Fleetguard in the near future and swap it again. The strange thing it will run for a day or (6-8 hrs) with no leaks and then the next time I run it starts seeping fuel.
Tom