Were you ever on lots of Antibiotics ? How bad is your acne? Are we talking about a few zits every week or two? Nevertheless, you could have leaky gut syndrome, or if you have some silver/mercury Amalgams (fillings), they can contribute to Acne too.
parasites play a part in Acne too. I guess I'm just curious; your diet alone should have helped tremendously, as well as everything else you are doing. So are we talking about a few zits or blackheads, or a face full of acne?