Hi guys new here and have a question on Ford 4000. The fuel line has been rerun from what I believe was its original path to carb. Old line left took it around and down etc... The problem is when I get to around a 1/4 tank its starts to cut out and if I am going uphill or opposite side hill from petcock she will stop getting fuel. Any thoughts on how to correct this? I am assuming the configuration of the way the old line ran gave a buffer of time or enough supply of gas so that this did not happen.