Are leaf springs a wear item? I’ve noticed my truck sags rather badly with any sort of load in it. My buddy has a ‘96 Sierra that I can stand on the bumper and it hardly moves, while mine sags like yo mama just stood on the bumper. Is this just how our trucks are sprung? Or is it time for new springs? Side note: what are yalls opinions on air shocks? Been bouncing that idea around to help smooth the ride out and help with the few times I load her down.