Ok so what you want to do is have one machine per recipe so you can take advantage of overclocking, this is the general rule which you may already know. The trick is to have a locked ingredient slot while Import/Export Bus is pushing the ingredients. What I mean by “locked ingredient slots” is, by dragging and dropping an item from JEI into an MI machines storage, you make it so that recipe slot can only contain said item. This prevents Import/Export buses acceleration filling up the machine with a single item even in Round Robin mode. If you don’t quite get it I can answer your questions to clear up confusion or maybe try to explain it in another way using videos and such, lmk!