Abstract: Rotatable article supporting plates with cabinet doors attached mounted on a rotatable central supporting shaft, the shaft being suspended, at least partially, from a mechanism for adjusting the vertical alignment of the doors relative to the cabinet door frame. The mechanism may be biased to maintain the doors in a preferred rotational position, e.g. a closed door position relative to the door frame. The preferred rotational position of the mechanism may also be adjusted to rotationally align the doors in their closed door position in the door frame. The mechanism includes a cam gear disposed in a housing which rotates on a sawtooth track in response to the adjustment of a threaded member to raise or lower the shaft and doors.