Step 9 : The difficulty was the parts were not unloaded from the inside cart to be transported by one of the two outside carts to the SINK. the issue is once the part has finished its last processing on a station , the next sequence is the exit. Therefore , the cart takes the part to its next destination (i.e., Input@SnkPartsLeave). To force the inside cart to drop off the parts at the
TNodeCart node , this node should be inserted into the four part sequences as seen in Figure 4.22.