[dogfish]

Obviously the Car is in your name already.
So if your going back in and they want you too resign for a larger sum (Mad If you Do) I would ask "Does this affect the stamp duty you paid to the Government" as I guarantee they won't phone up the local registry office and say oops we are supposed to pay you an extra $???.?? amount due to an error on our behalf as that final figure is what goes to the Government I think.
And as stated before they're being deceptive and how many eyes read the contract before hand.My personal Response when I Got back in there and re read the paper work would be "How Much Extra Ya Joking Aren't Ya", "Are your Eyes Painted on or what how many people read this", "If you think I'm signing that you can Bight My CRANK and Suffer in your Jocks Ya Flaming Mongrel."