Well when i phoned i explained that, but the woman put me through to 'servicing'. So perhaps he just picked up the phone and wasn't aware that i wanted it done under warranty. When he calls me back to say they got the pipes i'll double check. TBH, after reading about it being a common fault, i can't see how they could refuse. He asked how many miles i'd done, so maybe that's an indicator that he's thinking about warranty conditions. Anyway after just 3 months and 2600 miles i'll get it sorted at no cost one way or another Other posts i've googled, regarding the same problem and others, all sounded like Kawasaki seem to be fairly good at that sort of thing. Fingers crossed. I'm hoping that they can fix it while i wait and will give me a different bike to go for a joy ride on while i wait. A nice zx 6 or something