Long bars as in traction bars?
I have new 5100's on there as of March, so I'd doubt it's shocks unless I got a dud.
I've tightened/inspected everything under the truck. The only parts left are those related to the leaf springs. The bushings are crAcked, at least the portions that can be seen. When I give the leafs a good thump with my fist, you can hear the sound reverberate for a second throughout the leaf pack.
From what I can tell, my issue started with creaky leaves. First I sprayed some wd40 rust release in there and it really quieted the creak down, but after a day or so, the creak turned into a clunk. From there I thought, might as well lube them. Now the clunk is rather severe, so much so it sounds as if something is going to fall off. I cleaned up the leaves with brake keen to remove the lube, but the clunk seems here to stay. The clunk only happens when driving at slow speed over grass, sand etc. the occasional large road imperfection will also result in a clunk or two.
On one side, the overload spring ends are outboard of the rest of the leaf pack, on the other, there is more space between the individual leaves, space which used to be filled with rust/grime.
I figure since the clamps are cheap they'd be worth a shot, at least to help troubleshoot a little further. Ultimately I foresee ending up with new leafs, sulastics and a sway bar