I was just looking up the shift forks for both bike and the forks are identical but looks like the RZ uses pins over the forks that ride in the smaller shift drum.... in the pic the drum also looks longer and it has some extra pieces on the end.... are the drums and shift forks interchangeable.... I keep bending #2 shift forks which was why I was thinking I might have to change my cluster....so I was thinkin bout using th RZ for the taller gear....anyone done this?