I have a project that's been sitting for a while. I was a little flustered that I couldn't get it to crank. I put the bench 12v source to the pump and nothing, which finally had me cracking open the fuel tank. I found the filter had basically disintegrated. The black rubber grommet at the bottom was doing some weird stuff. Anyone know what this is? I assume sitting for a year with the same gas has a big part to do with it. How to clean up? drain and pull out the parts in the sump? hoping my lines are ok, but I have a filter near the tank so it shouldn't be a super long run....