The thickness of the food may not be even. Try evenly slicing the food.There may be too much food on the
tray, so try reducing the amount on the tray.Make sure to use the correct tray.Refer to the Sedona Supreme Dehydrator SDC-101 / SDE-P6280 / SDE-S6780 / SD-P9150 / SD-S9150 / SD-P9000 / SD-S9000 user manual for more information.