My bike is ticking...

[Dead Eye]

Yeah it sounds upset

I took it out today, more out of necessity than choice. The noise does calm down and appears to go away one its warmed up. However, it was back instantly when I restarted it 5 minutes after parking up at my local B&Q. I checked out the downpipes and two of the cylinders (the two on the right hand side if sat on the bike) were a lot slower to warm up than the others. I also noticed something odd when I got home - when I pull the brake lever, the brake lights come on (obviously) and my headlights noticeable dip a fair bit. I'm pretty sure that's not supposed to happen...

Thanks for everyone's thoughts - the tensioner seems to be the likely suspect at the moment, the bikes on about 24,500 miles at the moment for what its worth. Going to have to sort it out next week now as I'm moving to Essex this week so nowhere near enough time.