Filling up at the gas station

I have no problem filling up my '69 B body with the filler behind the Lic plate but my wife's 63 valiant is another story, I have to hold handle at a right angle to put in gas. I had to show my wife how to make it work. I guess it's the design of the new style filler tubes. I had a '63 back in the day and didn't have any problems with it. RH