Ok i am under the impression that i have a 84 model G52. I broke one tooth on both the cluster and the input shaft and i ordered them from all state gear but the new input shaft has an additional .067 gap between the bearing and the snap ring when the bearing is fully seated against the gear so is it a 84 or is it a different year or do i need a 23mm bearing instead of the orignal 20mm that came out of it? or can i order a spacer or what is my options here?