At the carburetor end, the Z/28 throttle rod fits in the SMALL hole directly below the LARGE hole in the throttle lever; the LARGE hole that takes a black rubber bushing and white nylon sleeve on the base V-8 isn't used on Z/28, L-34, L-35, and L-78. There should be no "play" at all in that attachment, which only takes an "E"-clip.