Hi! I recently bought a 2015 R3. The bike was new and had never been ridden before. I'm up to roughly 350 miles so I'm still running her in, ready for her 500 mile service. I noticed recently that when I leave the bike in neutral and pull the clutch in, she sounds like she should. However, when I let the clutch out in neutral, she starts making a different sound. She makes a slight chugging noise and rattles slightly underneath me. I don't know if this is something that has happened from the start and I've only recently noticed, or if it's a new thing because she's starting to run in slightly. Any advice? Thanks guys!