Venting...

I put a Tanks Inc tank in last year when I installed the Fitech fuel injection. My filler has a built in vent and my cap was also vented but as a precaution I put in the extra vent they sent with the tank. I am not sure if this is because of the new vent but when I completely fill the tank I get gas leaking from what appears to be coming from the vent area (maybe that's why they tell you not to completely fill the tank). Anyway I plan on looking into it this spring but just wanted to give you the heads up on the extra vent.