I am trying to remove the filler neck for the fuel tank on my 71 Cuda , any hints? I watched a YouTube video on a challenger and they said push the neck into the tank and twist. This cannot be done on mine for some reason because the flange that attaches to the rear valance is on the outside of the valance so I can only pull out. I have tried to pull it out but it doesn’t seem to want to come I don’t want to break it is there a trick. Thanks