I filter my fuel in two places, one on the pickup line in the fuel container and again on the other end of the pump as it goes into the tank. Once I am done fueling there is no filter on my plane. I did have one on, but it caused me no end of problems. It was on a PT-40 and I had it on the engine side of the firewall, I would suggest you put yours there. I would filter on the pump not on the plane, my personal preference.