Where is this other thread? Is it on this forum? I checked your recent posts and don't see anything. Coincidentally I hear a knocking sound sometimes when going over sharp bumps or stutter bumps. Has to be just right. It is like something on the front driver's side has too much play or is lose. I am wondering if that is also contributing to the problem. I mentioned it to the service advisor but it went in one ear out the other. He must have been following the ford service flow chart that says to ignore first request and hope customer forgets, before moving on to say - it's normal and then finally - drive it and say you don't hear anything and can't reproduce the problem. Lol