Train dispensers seem not to be functioning properly in the DW20 pack. A simple setup of a train dispenser (controlled by a lever) facing a long, straight line of control tracks seems to be giving inconsistent results. When the train dispenser has enough carts in the buffer to fit the specified pattern, and is supplied with a redstone signal, sometimes it will send out the whole train, sometimes only part of the train, and sometimes nothing at all. I'm not sure if this is a bug, or if I'm doing something wrong.