Hi Simon
I am only saying that because my aunt had a jag and the engine blow up at ,000 miles,she went back to the garage they said it cant be done under guarantee and she would have to pay for a new engine . So my aunt sent a letter to Jaguar to the top man, i think it was a woman at the and she said out of good will you don't have to pay a penny.
It might be worth having a go.
atb , mitch