My Le Mans filler cap has a small drain hole for overflow. I plugged it for now so it doesn't drain into the trunk. Requires very careful filling and in my experience there often is too much ambient noise with cars driving past or trucks, etc to easily hear the fuel going in and estimating the level so it doesn't splash out. I have tried leaving the ignition on to see the fuel gauge, but that isn't ideal. Have any of you devised a clever drain tube for that fuel cap overflow hole allowing the spills to run out to avoid the trunk. Looking for suggestions. Thanks.