HELP - I have a CBR600 (2000 model) with an attitude. The bike starts first go all the time HOWEVER, when it hasn't been ridden for a week or so it starts and then dies a minute later for no apparent reason. When you try to rev it to keep it running, it sounds like it is running on only 3 cylinders. If you can keep it running for a couple of minutes it will go fine for as long as it is ridden regularly. Otherwise, it will not restart again until it cools down again (lets say 30 minutes) and again, once started will run fine for as long as it is ridden every day. Before you ask - I have already replaced the battery. Any advise will be appreciated. :?