I don't get how things are this far, if I bought a part that was £500 I would be all over it the first couple days if it didn't work I would be hunting down another gt just to make sure that it wasn't the car, if you can't find another gt or not willing to send it off I would put it up for sale stating about your fueling problem etc somebody else maybe able to use it, it's never nice being out of pocket that's why it's always best to cover yourself with pp fee's :-/