A lot of really good information here- thank you everyone. I really enjoyed reading William’s comments. Very useful. I am also realizing as I re-read my original question, that perhaps the answer to part of the question is in the question itself. I asked if humacarb/moly etc would still be included- and when I think about it for more than 2 seconds, I realized that those materials are useful as components to get the N into amine form- so the answer is pretty obvious there if the N is already coming in amine form. Derp.