So I recently decided to exchange out my 1" lift block for a 3" block to get my rear end up higher. Well I have had it on for about a week and going over speed bumps is very jarring in the rear. I was looking at my leaf pack today and it is completely straight, no frowning and no U shape. I had the TSB done at about 10K and my truck has less than 40K on it.
Anyone else having this problem with the TSB leaf pack? I did tow a boat for a couple times that was around 6000lbs but damn would that kill the pack?