U Bolt Torque Thread (Rusty Calling You)

with the U-bolts torqued down that much, it doesn't allow the leafs to move freely as much. That's pretty obvious stuff right there. When the leafs are at proper torque spec, it allows proper interleaf friction which creates a damping affect. By overtorquing, you are taking away the leafs abilities to slide around as much and create friction against each other to create a proper damping affect, you are now creating(more of) a completely different animal called stiction, or static friction/static cohesion. This is caused when two objects are pressed against each other, not sliding or traditional friction causes. This requires more force force parallel to the surface of contact in order to overcome static cohesion.