Thanks Sean, I will certainly consider your advise. I almost went with a BVM UAT but I read many post here from people who used the Hanson. Now, we cant rule out operator error here so there may be nothing wrong with the trap.

KC36330,
As per the instructions, the festo connection is connected to the fuel pump, as you look at the pic, the line on the top right goes to the fuel tank and the line on the top left is the fill line, I understand that the system is to be filled thru this fill line. Isnt this correct? The UAT filled with fuel and then fuel started going into the main tank but there was an equal amount of fuel coming out of the UAT from around the threaded neck.

Cody