Does anyone know if it is possible to replace the cam chain guides by just removing the top end? Im not sure if the pivot bolt can be removed/replaced from the top. I dont really want to have to remove the front crankcase cover ( and all the other stuff that goes along with it) unless I have to. The guide that the tensioner pushes against and pivots on the pivot bolt is broken and must be replaced. The fixed one is probably ok, but I wanted to replace both if possible. 2005 650 Rincon. Thanks.