I think there have been reports recently on the list,of fuel lines
shrinking up from cold weather.Perhaps a connection is loose and leaking
because of this. When the tempature warms up this may go away. I would
check every connection. Especially where the factory seals have been
removed and clamps put in place.

Also, make sure that it is not the gas tank leaking. Bad seals here can
cause fuel to leakout when the tank is just filled to the top.

Looks like an epidemic