Okay, I know this is going to sound ridiculous, but my son has several food allergies and issues and I have spent the last 2 years obsessed with his digestion and specifically his poop (because it is the clearest indication of problems at this point). He has been to GIs and allergists in his short life, and it seems like we're always removing something else.
Well, my husband just changed such a perfectly formed poopy diaper that he had to come show me and we both squealed with delight. Removing gluten made a huge impact, but not enough. We had to remove chicken and it seems like that did it! I so hope this keeps up!!