Bought my first motorcycle back in 2019, I have a 2009 CBR600RR. I bought the bike when it had only 7,000 miles. As of today 04-19-21 I have about 30,000 miles. Ever since I bought that bike that day I would always hear a rattling noise around 4,000 RPM from 25-40 MPH. I just learned that it is most likely timing chain tensioner that is faulty. For 23,000 miles I have been riding around with a faulty timing chain tensioner. Question is, how soon should I get that fixed. I don't know much about bikes, maintenance and technicalities. I also have taken it to 4 track days with it too. I am pretty far behind on maintenance too (valve adjustment, spark plugs, and engine air filter). Any suggestions, stories, help, etc.