I was at the kawi dealer today and he said it's not supposed to make that much noise. he say he c 's it all the time, some are even louder tic 'n but still run great. He thinks it could be the primary chain off the crank. Anyone heard of this? It sound like valve's but I have had the head off and dissassembled....all measurments taken and re-assembled in good working order. the noise is really only noticable at lower idle to 2 grand mabey. any input my ninja brothers?