Long story short I have my second 04 F150 and I was wondering about the vibration. I know only a precentage of the trucks have it but I can't help but wonder if I will be one of them. Can you that have had it tell me about when you noticed it (miles) and if the clutch pack replacement was the only thing that fixed it, or did any of the steps before that actually help? Sure, I am paranoid but I can't help but have it in the back of my mind and would like to know when I can tell myself I am "in the clear."