I lowered my truck with a set of 2" rear shackels and they look great but has developed a slight vibration. It only vibrates from a start to about 10mph. It is not too noticeable but I know it is there. Do you guys know if you have to add a leaf spring wedge between the rear axle and leaf spring to correct pinion angle? Or do you think it might just be the U-joints do to running at that angle for so long?
Another question is that when I lowered it, I noticed that one axle bump stop was missing. So I went to ford and they discontinued them. Our local pick-n-pull just had they ones that are square. I was thinking about getting some shorter ones due to being lowered but does anyone have any ideas or have you run into this issue?