Yamaha XV Virago camshaft roller bearing upgrade (!read comment!)

====================================================== IMPORTANT NOTE REGARDING INFO IN THIS VIDEO; NEW INFO ON THE ROCKER SHAFTS! In spite of what I mention in the video, the rocker shafts have undergone an update. Yamaha has replaced the original shafts with a new type and thus different partnumber. As you can see in the video at 8:23 , I found two types of shafts in my donor cylinderhead and thus understood that inlet and outlet would be different. This is not the case. All for shafts are the same. Prob