Hello, I have 10 raw materials and 15 items. Items are created by combining different portions of the raw materials. I have built a model that simulate this process but I was wondering if there is any other approach that is more efficient. Currently I have 10 different ports for my raw materials and in my real-world problem there are many more raw types. Is there a way to avoid having separate ports for each raw? Also, for the combiner is there a way to specify different processing times for different raw materials?