auto shut off dumps gas on the side

they used to sell (back in the late 90's) at pep boys, a kit that they blled as an anti-siphoning kit. it was a large plate (the size of our tanks fill tube) with the smaller fill nozzle hole in it. also had a spring loadd trap door installed, just like a new tank.

now that this thread jogged my memory, im going to starl looking for one to see if it cures the problem, as i am also lazy at the pump.

michael