At one time, I thought Z bend were fool proof. I never used them because of the adjustably issue though. My last plane had Z bends and I discovered a flaw with this system. If the bend is made such that the wire can slide back and forth, or up and down in the control horn hole, the wire will tend to wear the hole and create excessive clearance. My real life experience with this ended my Z bend days. From now on, it's clevises with locks (Sullivan) and through screw ball joints.