shake half gone! - thanks

Guys, you may recall I asked for help about some furious shaking after installing a wingrack. I knew half gone tires were partly to blame, but it was too sudden and vicious to be related to that only. Many answers, most of them helpful, but no joy. Enter RSRBOB with his exacting comments and

RE: shake half gone! - thanks

RSRBOB, then maybe you know more than them all together. Man, I hope you're a pro mechanic, because if you're just an aficionado, I'm off to shove he is.