An apparatus and method for securing boney structures is disclosed which includes a compression mechanism and a force transfer mechanism. One container section formed as a clam shell closes over a portion of the tray. When the stopper is in contact with the first disk, rotation of a wing shaft is caused only by the rotation of the first disk, and when the stoppers are not in contact with the first disk, rotation of the wing shaft is caused only by the rotation of the second disk. This prevents an improperly seated wafer from being processed at the first station. If appropriate, the command operation is then executed on the identified portion of the data structure. The delay balancing engine may examine the modified model to determine whether any delays or latencies have been introduced.