Doesn't it make you mad that the regulations result in more pollution in the form of spilled fuel and air emissions than what it was planned to replace? Someone needs to be held accountable for this stupidity.
There are some good YouTube videos on how to modify your brand new fuel tanks to make them work like old tanks and also where to buy air vents to get a free flow of fuel. One of these ideas is to use a bicycle air valve for a vent with the inner part removed, the cap is the seal for when not in use. Requires a little surgery on the tank but well worth it. We all want to protect our environment, it is really frightening to see what these new tanks contribute to spilled fuel.
For my diesel jugs I siphon the fuel from the jug to the tank. That way I keep the siphon hose a little off the bottom so any dirt or water that settles to the bottom stays in the jug, I leave a little fuel in the bottom of the jug to trap any debris. I have used a fuel line with squeeze bulb for an outboard motor as a siphon, takes a while as the flow is slow but the squeeze bulb makes starting it easy.