Gas spills when gas pump shuts off

I was wondering if anyone else had this problem. I hadn't use the 67 Dart much until I did the restoration. I am finding that the gas pumps don't shut off fast enough and it spills out the filler tube down the side of the car. this happens even if I run it slow. I tried different pumps at the same station and different startions. I suspect it's because I have a striaght filler pipe without the disc with a hole in the disc for the pump nozzle causing it to sense the gas filling up too late.