So I don't hijack the other fuel vent thread, I just bought a '71 pig and filled the tank up. It's been sitting in the driveway since, but when it warmed up in the daytime (80-90 degrees) gas leaked out the filler under the cap. After a couple days of this, I drained about a gallon or less. It still did it. So I drained another couple gallons and it stopped. I haven't investigated this yet, but thought I'd throw it out and see if anyone had a quick response.
thanks,
david
thanks,
david