Does anyone else have a Brinsea 380EX? What do you do to keep your egg trays from sliding back and forth on the racks? In my GQF sportsman, I wedge a piece of cardboard between the tray and the edge of the rack to keep things from moving, but with the Brinsea, the edges of the racks are at an angle which makes this impossible. Any thoughts? Also, how often do you set your eggs to turn?