After looking at a couple rear wheel diagrams for the 77-78 cb750 F there seems to be a slight difference that has me puzzled. I am trying to reinstall my bearings/seals etc. One diagram shows what appears to be a bearing retainer labeled (#5) on diagram on the sprocket side and another diagram shows no (#5) retainer on the sprocket side but shows it on the other side of the wheel. Unless there is a difference between the 77 and 78 model years. Looking over the diagrams it appears that the 78 had this (#5) retainer on the sprocket side while the 77 has no retainer on the sprocket side but on the other side. Is one of the diagrams wrong or is it just a slight difference on account of the year? The first picture is the 77 diagram and the second picture is the 78. Third picture diagram is labeled 77 and shows the (#5) retainer on the disk brake side. Looking for some direction thanks in advance.