Ok i have all the fittings installed. a -8 supply, -6 return in the top of the cell, and a -4 vent next to the return on top. How does the vent need to be setup? I obviously dont want it venting into the car so i was going to run a fitting and some line under the car and coil it up at the same level as the top of the cell. Or is there a check valve i can install or something like that, maybe a catch tank? If i install a tank it would need to be able to vertnt