capture plate attachment
PullRite Multi-fit capture plates attach with one set screw tightened against the back of the king pin. For a little added security, my friend drilled two holes through the flange on the front of the capture plate just above the flange on the pin box. Two bolts through those holes prevent the front of the capture plate from dropping down as might happen when backing the truck under the trailer. Also notice that he put a few shims between the plate and pin box to help eliminate movement.