i have a great planes easy fueler valve installed in my new gp p-51...I'm using 15% mean and green fuel with no castor and I'm running a satio 72...now the valve is mounted under the engine on the back firewall with the top of the valve facing down....I'm using a electric pump to fill the tank and i have connected the probe that came with the valve on to the end of my hose...well now to the problem ....when i go to refuel i noticed that i have gas coming out of the carburetor as well as going into the tank...this valve is brand new....i did noticed the first time i used it i didn't see and gas coming into the carb..but i did use the pump to take the fuel out of the tank..... could i have broken a seal of some type using the pump????? thanks for any information

pete