You have good pictures of your fix and your explanations make clear why you did things as you did. I'm just curious about other's experiences with this issue: I would personally worry that reinforcing the axle would in turn make the center pivot the weak link, and snap the tabs locating the pivot, or otherwise cause damage to a less or non-repairable part. From my limited understanding, I think I would prefer to have the axle as my "fuse" as opposed to the casting or center pivot. Does anybody have some enlightenment about what works and does not with respect to these types of repairs?