My bike has had a grinding engine noise for several months. My hubby told me since the engine itself has plenty of power, the noise was just superficial and to ignore it, which I have done. I took it in to get a service today, and received the absolutely devastating news that the noise is the left hand main bearing which has almost totally collapsed. He also said it would be several thousand dollars to get it repaired, and there more than likely will be more wrong with the engine since the problem originated (we think) by it sitting untouched for 20 years in a warehouse in Japan before being imported here and onto us. This bike has only done 36,000 klms! He said I cant get a roadworthy for it, and because we really are badly off financially, another bike is not really in the picture at the moment. He told me not to ride it any more since the back wheel is very likely to sieze up. I really love this bike! I really live to ride! I just dont know what were going to do, since our lives revolve around our Sunday rides, and I definately dont want to go back riding pillion again.