Need a new bead

[fabsroman]

Have you tried holding the bead in place while tightening the screw? The bead is probably rotating because the screw is rotating and applying pressure to it. I know I had to hold my beads in place as I tightened down the screw. If you have to, use a pair of pliers to hold the bead in place while you tighten the screw, or start it in a east/west position and hope that it is straight up and down the rib when you are done tightening the screw.