[hankpage]

First thing you need to do is remove the spare and relocate it someplace else. ( I carry mine in the bed of my truck)
The flimsy L brackets that hold the rack need help. I did this as a temporary fix almost ten years ago and it worked well, so "If it ain't broke , don't fix it."

I added a hitch mount bike carrier over the upright post that Keystone supplies and use ratchet straps and bungees to stop any bouncing. Bungees alone will allow the bikes to bounce.

No, I do not have stock in a bungee factory, I am just paranoid. Hank