I have a blaze soul shard spawner and I have MFR grinders killing them. I have EU transfer pipe coming off the back of the grinders leading into a chest VIA a retrieval node on the chest. The problem is, is that the retrieval node isn't pulling out the blaze rods from the grinders. At the bottom right of the second picture you can make out a retrieval node on a testing chest. I also think it is worth mentioning that I think the problem is either that the energy node coming off of the tesseract is somehow interfering with the process, or the MFR grinders are somewhat bugged, because they aren't producing mob essence either. (Before someone says "Make sure you have the correct nodes for each material, liquids and items!", I already did
) I probably just made a silly mistake somewhere in the making of this.