So I bit the bullet and decided it was time to open the cam chest and check things out. My 08 CVO has always had some valve train noise since day one and other than that, I absolutely love this bike. 41000 miles on the clock. I've road a lot of newer frame bikes and am just not happy with the newer suspension. So, I just completed installing new lifters, inner cam bearings, and I also installed the newer rocker housings (my original rocker housings were clearanced back when, but still were suspect). I am happy to report that I no longer have any of the valve train noise. Well, let's say it's more like sewing machine noise if any. I can't believe how much better my engine sounds. I am Sooooo glad I made the decision to do this as I intend to get many more happy miles from this bike. Upon inspection of my original lifters, cams, and inner cam bearings, I did not see any evidence of unusual wear and tear. Tensioners looked good as well.