So I have mentioned before that my wife and I traded bikes, she get the gen 6 VFR800 and I get the 18 street triple. She took it off the road for winter and did a heap of work like braided brake lines and rebuilt the brake and clutch master cylinders and painted the wheel...etc. The point is the bike sat for 4 months. We just did an oil change and when the bike got warm it started to clack, its fine when cold. It sounds like the top end. cam chain tensioner?