So I'm riding the other day and my bike starts making this loud clanking/ rattling noise that in my estimation is coming from the top end. It's an 06 with 5,000 miles btw. So I'm assuming I've spun a bearing as this seems to be a common thing to this bike but I take it to two different dealers and they both say it's coming from the top end as well and it sounds like something is slapping around in there. My guess was the tct so I pull it out today and it appears to be fine but the service manual doesn't exactly go into much detail on how to check it. When it started making this loud ass knocking/rattling noise no idiot lights came on on the gauges, no smoke, no coughing or sputtering like if I had bent a valve, starts and idles fines, still had power. Thoughts??? Any help would be immensely appreciated as I have a track day coming up in three weeks if I need a new motor I need to get looking!