I am in the process of rebuilding my entire front end and I've can into what seems like a problem. I have a 98 K1500 that came factory with the stamped/welded LCA. I put the forged ones on from a k3500 and when I slip the torsion bars into the keyed slot on the control arm there is a little bit of play. I don't have the original control arms to compare since I had to cut them into pieces just to get them off the truck. This is the first time I've messed with torsion bars so I'm unsure if the little bit of movement is normal or not. Could the K3500 have slightly bigger torsion bars?