Thanks for the responses, i have only had the bike a couple of weeks and my last one was a blackbird which was fairly quiet when running so was just worried the noise was something serious? This is the firsy carbed bike i have owned and first kawaka since my old AR 125 days in the early 90s... I have the bike booked into JHS racing on thursday for a service anyway as doesnt appear to have had one for a couple of years, though has only done a couple of thousand miles since then. I have a remus can( without db killer) on there at the moment and its load enough to cover the noise at speed, and the sound of the air intakes after 4k upwards always brings a big cheesy grin, but need to get hold of a standard one so i can take it to castle comb for a blast out.
I will update this thread with the good or bad news after its been in for its check up.
Thanks again for the responses