Leaf spring U bolts torque spec

I know I've already posted this on another thread, but Rusty appears to be right on the money. When I re-torqued my bolts down to a 'lesser' 45 lbs it did seem to improve the ride. I realize it may have seemed like some folks were disrespecting good advice, but it did provoke a better definition of why things work the way they do. It made me think more about the plastic I installed years ago in a front traverse leaf assembly on a T-bucket. Obviously those leafs were meant to slide. So I guess that anything done (like over-torquing u-bolts) to impede that movement would screw things up. Thanks Rusty.