izzy

I've been finding answers on this site for months and just now registered. I installed a 6" Fabtech lift on my 02 supercrew. Subtle vibration at 30-40 mph. Intense vibration at 60-65mph. Running 35's so its really 70-75mph. Found the support bracket for the center link loose. Tightened it up, still vibrating. Everyone said i needed a steering stbilizer, installed it. Still vibrating. Found lower end of shocks loose. Seems the manufacturer gave me the wrong sleeves for the shocks. Got the new sleeves from 4 wheel parts and installed. Still a little loose, but knocked 50% of the vibration out. I figured i would tighten them up some more with an impact. Bad idea, broke the shock mount tab off the lower control arm. I guess my question is, could those loose shocks cause so much vibration? There are no washers or spacers between the shock and the mount. Are there supposed to be?