Ok, I think I have it figured out. My FBG went down but I was doing a lot of new things at once. Now I added them in one at a time and I think I have pinpointed it. It was the Gymnema Sylvestre. Or possibly Gymnema + Vanadium. I haven't tried the GS alone, but will try that next.

My FBG was 88 this morning and after a relatively carby lunch (black beans in it) it was only 101.