Nice going Omega(Jay)...It seems to me that you may have the problem covered. Im gonna try 2 things to resolve the thump. First I will do as you did to your spare,& second Im gonna do what Tone said to do wih the gizmo on the side of the rear door...I'm gonna do both of your suggestions. They appear to be logical & the price is right. .....I will let you guys know how it turned out later on tonite.....Once again thanks you guys................." Is VehiCROSS.info great or what?"....Bruce