OK, I heard the other day that some guys have taken valve springs and put them under their body mounts on a longer bolt and left enough thread that when the body would begin to flex and pull on the body bolts the valve spring would collapse about .5" to allow more flex! Has anybody actually seen this done? What about the safety factor? I'm thinking it would be ok on a trail only rig but don't know about highway use. I guess from what the guy said it is mainly done on the rearmost and foremost bolts on the body tub. I would like to know if anybody here has tried this and if they did any comparing. Still wondering about a safety issue here.