Hi Guys, My factory has started making an awful clacking/clattering sound from around the top end under load from cold. Once up to temp, the noise largely disappears. Also using anything other than 98 octane fuel is causing huge amounts of engine vibration. Not sure if these issues are related but both started on a road trip down through France which I have just nursed the bike back from. My initial thoughts were a detonation problem but using octane booster whilst away only solved the vibration issue and UK fuel hasn't improved the engine clatter. Any ideas or advice would be really appreciated.