My bike as developed a tick lately. I checked the valves and I had one out of adjustment. All the others were well within tolerance. After adjusting the valve it got a little better but it's still there. When I had the intake cam off the bike I noticed a slight scoring on the right rear camshaft bearing. I'm not sure but some foreign matter must have made it's way into the bearing through the little oil port at the top. I'm wondering if I should replace that collar or just ride the way it is. I know those collars are matched up at the factory. The bike is running fine but I still hear a slight tick.

Live Free or Die Velvet