Hi I own a 2008 cbr1000rr with 3600 miles on it. A few weeks ago I took it in for it's first oil change. About a week or so later I started noticing a chattering/clicking/rattling sound coming from the top of the motor (I believe). At first I started thinking that the oil was too low, but after checking I found out that it was overfilled. The oil level seemed quite a bit higher than the high mark. I called the honda dealer today and explained to them the sounds the bike is making, the oil issue, and the decrease in power. I brought it in and the mechanic who did the service work didn't want to take any responsibility for the problems. Either way I had him pump out some of the oil which ended up being about 8 ounces. I'm not entirely sure what to do at this point. I know my bike and I know how it was running prior to taking it to the honda service dept. but the mechanic is acting oblivious to the problems I'm having, and is telling me that the oil couldn't have caused any issues. I feel like I'm getting the run-around with him. So I'm wondering if anyone has some insight to this problem or if anyone knows if the additional oil could have caused some issues? I did read somewhere that if you put in too much oil, the crankshaft will churn it up and introduce a lot of air into the mix. If this happens the oil pump has a hard time pushing it to the top of the motor which essentially starves the motor of oil. If the dealership will not do anything what options do I have? I've considered reporting it to the BBB and if necessary getting an attorney involved. Any advice is appreciated. Thanks.