What is the wear of motorcycle cam rocker arm and camshaft? Better send a picture. Be clear. There is also the wear of the cam rocker arm. Is it necessary to replace the camshaft together?

Obviously, the corresponding camshaft will be worn, but it will be sunken by hand, and there are other situations, such as loose rocker shaft and rocker hole, obvious wear hook mark of bearing camshaft and so on. The following picture shows the worn camshaft, please refer to the picture.