After countless hours doing the bx filter mod I have finally got the filter assembly I decided to use to quit leaking fuel. It was a major pita but I think I got it( of course after I ordered a different filter assembly) but my question is what is the trick to get the fuel filter closest to the injection pump full of diesel fuel? My fear is that on a hill it will start to suck air. I got it about 1/2 full but can't seem to get it full since it's on an angle. I have tried everything I can think of . Thanks for the help