Each one of the runners of the suspended ceiling system has a base with two laterally opposite flanges for supporting ceiling tiles. The disk drive includes a disk having a plurality of servo wedges, and a spindle motor for rotating the disk at an operating speed. Remapping is done as part of initial test and configuration. Some of the wall portions are perpendicular to the bottom plate, and the others are parallel to the bottom plate. A mechanism may be provided which provides a puff of air to at least one of the chambers at the end of the operation thereof to reduce the feeding of doubles and a bent fence may be suitably positioned to both facilitate feeding of shorter articles and to facilitate proper initial alignment of the articles.