Yeah what Kenny said. Unless it's something obviously not related to the exhaust (eg: fuel tank started leaking gas on the pipe which caught on fire) Triumph'll just say that in their opinion your modification caused the problem and invalidates the warranty. Even if it didn't, technically you've still voided it. I'd be looking for a second hand pipe. - with the number of folk here with aftermarket pipes there should be a stack of nearly new ones available 2nd hand & cheap. I've even got a set of stock america pipes under the house practically unused but shipping them to you'd stop it being worthwhile.
Matt
