Fuel Filler Issue on Hilux 98

Hi all,

I am having an issue with my fuel filler on my 1998 2.7 hilux.

When i go to fill the car at the fuel station, i have a huge amount of difficulty getting the fuel in. I squeeze the trigger ever so slightly and the bowser just does the automatic shut off or whatever you want to call it.

I can stand there for a good fifteen or twenty minutes trying to fill it

If anyone could sugest anything to fix this problem as it consumes so much of my time that would be excellent.

I have attached a few images of the filler if that helps. (sorry they arent spectacular, it was hard trying to get a decent angle)

also, i forgot to get a picture of it (the camera just broke too) the inside of the filler has a 'flap' as i would call it, the nossle of the bowser goes through this.

thank you.