Hmm.....that's odd. That's all I've ever ran on mine ever since I replaced the factory ones at 60k or so during my lift install. Moog #K8695T (Problem Solver). They went in beautifully and the unplanned replacement of one last year was a breeze as well. All with the same factory LCA's. EDIT: I see Moog offers two lower balljoints for torsion bar trucks....one is the K8695T and the other is K8695T006. Both Problem Solver line products. The keynotes list that it is an oversize ball joint. Sounds like you got the wrong joints.