just spoke to them myself, they are giving me mixed facts.
They apparently told my garage that they can cover it, but will need the engine to be stripped down for diagnosis, even though the garage are 100% sure that this is the problem and have offered for an engineer to come out to confirm this.
I called them and after arguing with one person, I called up again, he said htat piston slap wasn't covered even though the previous person did. I asked to speak to a manager, who I was put through to, but the line was busy, and he said he will call me back in 24 hours. I said not good enough, if he's on a call he can call me when he's done. Called up a 3rd time and the person said he will get the boss to call me. I will wait until 5:15 (they close at 5:30) and call again and get put through to the boss.
I'm also mentioning to him that this "ordeal" is being broadcast over multiple forums, and is probably spanning a good 1000 people. So if you are Mr Craig Cartlidge, hello, and please get this resolved before it has to go any further